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Business Details
27 Years
experience
Emergency
services
Your Trusted Doncaster Locksmith Experts
Established in 1999, S F Locksmith is a trusted, independent locksmith business providing professional locksmith and door repair services throughout Doncaster, South Yorkshire and surrounding areas. With over 25 years of industry experience, we have built an excellent reputation for reliability, honest advice, quality workmanship and outstanding customer service.

We specialise in uPVC door lock repairs, composite door repairs, multipoint locking mechanisms, patio door repairs, emergency locksmith services and high-security anti-snap lock installations. We also provide locksmith services for landlords, letting agents and commercial properties.

As proud members of the Association of Accredited Locksmiths, we maintain high professional standards and are fully insured and DBS checked. Our experience and commitment to customer satisfaction have helped us achieve recognition as one of Doncaster's Three Best Rated locksmiths for seven consecutive years.

Our fully equipped mobile workshop carries an extensive selection of genuine replacement locks, gearboxes, handles and specialist components, enabling us to complete approximately 99% of repairs on the first visit. We offer prompt, same-day appointments whenever possible, with no call-out charges and clear, competitive pricing.

Unlike companies that recommend expensive replacement doors, our approach is to repair existing locks and mechanisms wherever practical, helping customers save money without compromising security.

All completed work comes with a comprehensive two-year parts and labour guarantee, providing additional reassurance and peace of mind.

From emergency lockouts and broken door mechanisms to security upgrades and routine maintenance, S F Locksmith delivers dependable, professional locksmith services backed by decades of practical experience.

S F Locksmith Trusted Local Locksmiths Serving Doncaster Since 1999.
Services
uPVC door repairs Anti-snap locks Composite door repairs Patio door repairs Landlord services Commercial locksmith Lock replacement Emergency call-outs High-security handles Window lock repairs
Served areas
  • Doncaster, Rotherham, Sheffield, Barnsley, Maltby, Thorne
Details
  • Year established: 1999
  • Employees: 1
  • Licensed
  • Insured
Highlights and features
  • Established in 1999 Over 25 years of professional locksmith experience serving Doncaster and South Yorkshire.
  • 2-Year Parts & Labour Guarantee All completed work is backed by our comprehensive two-year guarantee.
  • Same-Day Locksmith Service Fully stocked mobile workshop carrying genuine replacement parts for fast, efficient repairs.
  • Accredited & Trusted Proud members of the Association of Accredited Locksmiths, fully insured and DBS checked.
  • No Call-Out Fees Honest, transparent pricing with free quotations and no hidden charges.
  • 99% First-Visit Completion Rate Most lock and door repairs completed during our initial visit.
  • Award-Winning Reputation Recognised among Doncaster's Three Best Rated locksmiths for seven consecutive years.
  • Repair Rather Than Replace Specialist repairs to uPVC, composite and patio doors, helping customers avoid unnecessary replacement costs.
Associations and certifications
  • Association of Accredited Locksmiths
Payment methods
  • Cash, Checks, Debit cards, Mobile payments, Bank transfers
What people say
Quick and efficient Professional and friendly Excellent service Highly recommend Competitive pricing
Website
Services
UPVC door repairs
We specialise in uPVC door repairs, addressing failed locking mechanisms without requiring full door replacement. Our technicians carry genuine parts to complete 99% of repairs during the first visit. Faulty multipoint locks are replaced with durable alternatives, restoring functionality while maintaining security. All repairs include a full door service and alignment check, with a two-year guarantee on parts and labour.
Anti-snap lock installation
Protect against lock snapping burglaries with our high-security anti-snap lock installations. We fit Ultion WXM cylinders featuring anti-pick, anti-drill, and anti-bump protection. These locks maintain your door's appearance while significantly improving security. Installation includes specialist PAS 24 handles where appropriate, creating comprehensive protection against forced entry attempts.
Composite door repairs
Our experts fix common composite door issues including misalignment, broken handles, and locking mechanism failures. We service multipoint locks, adjust hinges, and replace damaged components with genuine parts. Emergency opening services allow access without damaging doors, with repairs completed during the same visit wherever possible.
Commercial locksmith services
We provide comprehensive security solutions for commercial properties, including coded lock installations, master key systems, and roller shutter lock replacements. Our DBS-checked technicians serve schools, retail spaces, and council properties, offering emergency access solutions and compliance with insurance requirements.
Patio door repairs
Specialising in patio door repairs, we fix broken gearboxes, misalignment issues, and faulty cylinders. Our technicians carry Hoppe and FabFix handles, ensuring durable replacements. We prioritise repair over replacement, saving customers money while maintaining security and thermal efficiency through proper door alignment.
Anti-Snap Locks Anti-Snap Locks
Our approach to preventing lock snapping involves replacing standard euro cylinders with advanced anti-snap alternatives. We recommend Ultion 3-star WXM ALPS locks for their independently tested resistance to snapping, picking and drilling, alongside anti-bump protection. We can assess existing locks and advise on suitable replacements. PAS 24 handles provide further reinforcement where installation is possible.
Landlord Services Landlord Services
Security concerns in rental properties can arise from damaged locks, faulty windows, lost keys or burglary incidents. We assist landlords by providing lock installations, replacement keys, uPVC repairs and emergency locksmith services. Our longstanding experience also covers property access during evictions and repossessions. We use suitable replacement parts and aim to deliver efficient, durable results without unexpected charges.
Commercial Locksmiths Commercial Locksmiths
We assist commercial property owners, landlords and facilities management companies with a broad selection of locksmith requirements. These include replacing door locks, fitting coded mechanisms and maintaining security through roller shutter lock changes. Our qualified locksmith can respond to emergency lockouts and produce spare keys on site. We aim for same-day attendance and provide clear quotations.
Lock Replacement Lock Replacement
Our lock replacement service covers a wide variety of locking systems fitted to wooden, uPVC and other doors. We install mortice deadlocks, sash locks, euro cylinders, anti-snap locks and multipoint mechanisms. Drawing on extensive industry experience, we ensure the appropriate locks are fitted. We offer competitive pricing and guarantee our parts and labour for two years.
People
Stephen Fretwell
Owner & Lead Locksmith
Stephen Fretwell has operated as a professional locksmith in Doncaster for over 25 years. His expertise covers residential and commercial security solutions, with specialist knowledge of modern locking systems. Stephen personally oversees all emergency call-outs and complex repairs, maintaining the company's commitment to quality and customer satisfaction.
Questions
Do you offer emergency locksmith services?
Yes, we provide emergency call-outs seven days a week. Our technicians can attend most Doncaster locations within hours of your call, including evenings and weekends.
Can you repair old uPVC doors?
We repair uPVC doors of all ages, including models over 10 years old. Our technicians carry extensive spare parts and can source alternatives when original components are obsolete.
Are your locks insurance approved?
Yes, we install British Standard quality locks that meet insurance requirements. Our anti-snap locks carry multiple security certifications including anti-pick and anti-drill protection.
Do you provide same-day service?
We complete 99% of repairs during the first visit. Our mobile vans carry over 1,000 spare parts, allowing immediate resolution for most door and lock issues across South Yorkshire.
How long does a door repair take?
Most uPVC and composite door repairs take 1-2 hours. Emergency access operations can be completed in 30 minutes. Complex commercial installations may require additional time depending on scope.
What areas do you cover?
We operate throughout Doncaster and surrounding South Yorkshire villages including Bentley, Balby, and Mexborough. Our service area extends to commercial properties in nearby industrial estates.
Videos
Reviews (33)
Dawn Eastell
Sep 09, 2026 Report
Called for 2 door lock changing arrived with in 24hrs.
High quality keys.
High security locks
Friendly and quick
Took a matter of seconds to change the 2 doors.
Took Steve's business cards
Highly recommend
Great price.
3 keys per door.
Stephen Lewis
Aug 13, 2026 Report
I was very happy with the service received from the Locksmith. He discussed my problem initially over the telephone, explained clearly what work would be required and the potential cost to ensure that I was happy to proceed. He called out to complete the job at short notice on the same day as our telephone discussion at the agreed time and also carried out a small additional task I asked about when the initial job was completed. I would recommend the Locksmith as reliable and trustworthy for any future work.
Derek Francis
Aug 08, 2026 Report
The locksmith Stephen kindly agreed to come at short notice. He was punctual and assessed the work to be done to rectify this problem with the French doors. He was professional & sociable and undertook the adjustments to get the doors working correctly. He was also obliging enough to adjust the front door too , at the same visit . I very pleased.
Jane Hayes
Jul 03, 2026 Report
I recently contacted Steve regarding problems with a window lock and a UPVC door repair. He answered my call, knew what the issue was and agreed to come out to fix it. On the day, he arrived on time, worked efficiently and was quick to repair both issues. He was very professional, friendly and completed the job for a good price.
I would definitely contact him again and would highly recommend his services.
Ian Gelder
May 08, 2026 Report
Great service. Stephen came the same day to repair my French doors that were misaligned and sticking. Would highly recommend.
Brad Clifford
May 07, 2026 Report
Cant recommend Stephen enough, came out to me within a few hours to fix my completely broken door handle, replaced and adjusted with original key within an hour and for a perfectly reasonable price, will be using again for all future repairs! Thanks Stephen
Emma Jeynes
Apr 23, 2025 Report
Steven was friendly & very professional - he got the job done quickly with no mess. He replaced the locking mechanism on a pvc door for me. I would highly recommend him. Thanks Emma
Tony Sheppeck
Apr 20, 2025 Report
Its the second time I have used SF Locksmiths, again very quick response, excellent work, nice guy too.
Paul Mitcheson
Apr 04, 2025 Report
I contacted Steve regarding an issue with my tilt slide patio door, he gave me a price over the phone & came out the same day. Fabulous service & would highly recommend as most people give tilt slide doors a wide berth when it comes to carrying out repairs.
Whitakers Pharmacy
Feb 23, 2025 Report
Very effecient and helpful
Susannah Neave
Feb 08, 2025 Report
Absolutly amazing, came out really quickly, was so professional, friendly and knowledgeable. 100% recommend
Graham
Jan 22, 2025 Report
Quality repair of my front door locking system , carried out quickly and courteously. Would thoroughly recommend. Thanks
David Almond
Dec 28, 2024 Report
I'd fully recommend to anyone. Arrived 15 minutes after contacting, had all the equipment he needed to do the job and was upfront about the cost before arriving. Didn't just fix the locking mechanism, realigned the door which has stopped the draft too.
L. C.
Dec 12, 2024 Report
Thank you Stephen for rearranging your schedule today to repair our front door lock mechanism. We have used Stephen previously and found him to be friendly and knowledgeable. Recommended and we would certainly use him again.
Lucy Smith
Dec 11, 2024 Report
Fantastic service came on a Sunday morning. Sorted both our front door and back door hassle free. Thank you
Tony Noon
Aug 28, 2024 Report
Attended around one hour after I rang to say our front door lock needed replacement. Quick , clean and satisfactory.
Roy Daley
Aug 13, 2024 Report
Have used SF Locksmith several times. Always good service from very knowledgeable locksmith. Highly recommended.
Hayley Atkinson
May 08, 2024 Report
Brilliant service. Very prompt arrival following an emergency and talked us through what the issue was. Would use again if an emergency was to happen
Mia Georgia Betts
Feb 09, 2024 Report
I needed a local Doncaster locksmith urgently as I couldnt lock my door, after reading various Google reviews I decided to call SF Locksmiths. Stephen advised what the problem was likely to be over the phone and arrived within the hour. He replaced my faulty door lock mechanism and upgraded my door locks too. Straight forward, no fuss, very happy. Thanks again.
Jamie B.
Dec 23, 2023 Report
Steve always Happy to help
Very experienced
And very good communicator -excellent Service!
Jan Baker
Oct 26, 2023 Report
Would highly recommend Stephen. I messaged him, explaining our situation & he replied within minutes.
Visited us today & was able to sort out a door locking issue which we had been told was not repairable.
Very professional, knows what he's talking about & a very nice guy too.
Paula McGarry
Oct 21, 2023 Report
After our initial call Stephen arrived quickly and communicated well with us.

The door barrel was faulty and was replaced quickly and without fuss.

Stephen also carried out a few tweaks on the door, and quite honestly.it has never closed or locked so easily!

Would absolutely use his services again in the future and highly recommend.

A genuinely nice fella and a great tradesman.
Jane Bowman
Oct 09, 2023 Report
Absolutely recommend S F Locksmith. Called on the morning of our door & lock being broken after attempted burglary and came in no time. Gave us advice on what was needed with several other locks, which we were happy to follow. Clean and quick service. Thank you very much.
Amy Davies
Oct 01, 2023 Report
Stephen proved to be an absolute lifesaver after a spate of break-ins on our street. Responding promptly to my call, he upgraded my locks to anti-snap variants and also upgraded the locks on my old sliding patio door lock. His expertise and attention to detail was fantastic, ensuring not only a seamless installation but also providing invaluable advice on bolstering my home's security. Thanks to Stephen, I now feel significantly safer in my house.
Greg Curtis
Mar 31, 2023 Report
Super fast call out, fixed the issue immediately, really nice guy, Thanks
Will Conway
Feb 07, 2023 Report
Great service. Couldnt get out the back door, turned up in an hour and sorted it quickly. Very impressed
Hollie Altoft
Nov 08, 2022 Report
Excellent service, rapid response. Friendly guy nothing was to much trouble. We had been locked out and he got us in within minutes. Highly recommended and will be using again.
Thank you u saved us.
David Briggs
Oct 18, 2022 Report
It was a pleasure to deal with Steve.Within 1and a half hour from my first call to completion of my unlockable UPVC exterior door was completed with a very efficient and friendley manner,and we were told the total cost of the door lock and labour charge before agreeing to the repair. I would recommend his company to anyone with door lock etc. problems Many Thanks
Robert Fenn
Apr 11, 2022 Report
Outstanding workmanship friendly and reliable goes the extra yard !!!
Recommend without hesitation .. 26th May
Robert Brearton
Jan 15, 2022 Report
We are absolutely delighted with the work on our Tilt and Slide patio doors. From jammed and rough to as good as new. We were given a price on the phone and it wasn't a penny over. I firmly feel we have been saved hundreds by not having to replace them. I give Stephen Fretwell 100% and would recommend him.
Helen Brown
Apr 14, 2021 Report
Fantastic service, came when he said he would, good value. Thanks so much for a brilliant service
Florea Andrei
Jan 20, 2021 Report
Nice, friendly locksmith saved us from the nightmare of being locked outside.
Keith Ravenscroft
Apr 11, 2020 Report
Fantastic response came on a Sunday within 2 hours gave great advice did the work no fuss no mess highly recommended