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SF Locksmith SF Locksmith
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Business Details
27 Years
experience
Emergency
services
Your Trusted Doncaster Locksmith for Secure Solutions
Since establishing SF Locksmith in 1999, we have focused on providing trustworthy locksmith assistance to customers across Doncaster and the wider South Yorkshire area. Our business is founded on honesty, reliability, courtesy and a commitment to responding promptly to customer requirements. With more than 25 years of professional experience, we offer knowledgeable support for a variety of lock-related concerns affecting residential and commercial properties. We are a qualified and accredited locksmith, have undergone DBS checks and hold police and insurance approval. Whether customers require assistance with door locks, window locks or replacement components, we use suitable techniques, specialist equipment and quality products to address their requirements.

Our work extends beyond dealing with immediate locksmith problems. We also offer security information and expert advice to help customers understand how their homes, families and premises can be better protected. Operating as a mobile locksmith, we maintain a well-stocked van containing useful tools, locks and spare parts. This allows us to offer practical assistance throughout our service area, with same-day attendance available. We do not impose a locksmith call-out charge, and our supplied locks and parts include a two-year guarantee. We value the positive reviews received from customers and continually aim to provide attentive, efficient and professional service.
Services
uPVC door repairs Anti-snap locks Composite door repairs Patio door repairs Landlord services Commercial locksmiths Lock replacement Emergency call-outs Window lock repairs Security upgrades
Served areas
  • Doncaster, Rotherham, Sheffield, Barnsley, Maltby, Thorne
Details
  • Year established: 1999
  • Employees: 1
  • Licensed
  • Insured
Highlights and features
  • We have provided trusted local locksmith services since 1999.
  • We offer free locksmith call-outs with no additional charges.
  • Our DBS-checked locksmith is accredited, police and insurance approved.
  • We guarantee all replacement locks and parts for two years.
  • We provide same-day locksmith services throughout Doncaster and South Yorkshire.
  • Our fully stocked van carries specialist tools and quality locks.
Associations and certifications
  • Association of Accredited Locksmiths
Payment methods
  • Cash, Checks, Debit cards, Mobile payments, Bank transfers
What people say
Very quick and efficient Highly recommended Professional and trustworthy Excellent customer service Competitive pricing
Website
Services
UPVC Door Repairs UPVC Door Repairs
Whether you have a patio, conservatory, bi-fold or tilt-and-slide door, we provide specialist repairs for defective uPVC locking systems. Our work encompasses mechanical faults, damaged components and alignment difficulties that affect everyday operation. We carry a broad inventory of replacement parts to support same-day completion. A two-year guarantee covers our parts and labour.
Anti-Snap Locks Anti-Snap Locks
We specialise in upgrading existing door locks with high-security anti-snap cylinders designed to discourage attempted break-ins. Our preferred Ultion 3-star WXM ALPS locks provide multiple protective features, including resistance to snapping, drilling, picking and bumping. Installation does not require a replacement door. Compatible properties can benefit from supplementary PAS 24 security handles.
Composite Door Repairs Composite Door Repairs
Our composite door repair service covers faulty multipoint locks, damaged handles, difficult keys and alignment problems. We carefully assess each door before undertaking repairs, using specialist techniques to minimise the risk of damage. With a comprehensive selection of genuine replacement components available in our mobile workshop, we aim to complete repairs during our initial visit.
Patio Door Repairs Patio Door Repairs
We undertake patio door repairs for customers experiencing security concerns, damaged fittings or difficulties opening and closing their doors. Our work includes correcting alignment problems, adjusting hinges and replacing defective locking mechanisms. We also assess older aluminium sliding doors, although obsolete components can restrict repair options. Our recommendations reflect the condition of each door and the practicality of repair.
Landlord Services Landlord Services
Our landlord locksmith services address the security requirements of rental properties, including situations involving tenants and restricted access. We undertake lock changes, repair faulty uPVC doors and windows, and assist with property repossessions. With over 25 years of experience, we provide practical solutions and emergency assistance. We also supply replacement keys and insurance-compliant locks where required.
Commercial Locksmiths Commercial Locksmiths
With experience dating back to 1999, we undertake locksmith work for retail premises, educational establishments, churches and other commercial buildings. Our DBS-checked service includes installing British Standard locks and replacing specialised shutter locks. We offer coded access systems alongside master suites and restricted key arrangements. Urgent lockouts and additional key cutting are also covered.
Lock Replacement Lock Replacement
We provide professional lock replacement and upgrade services for domestic and commercial properties at competitive prices. Our experienced locksmith can replace mortice, multipoint, euro cylinder and other door locks, regardless of their age or manufacturer. We carry an extensive selection of replacement locks for prompt service. All our work includes a two-year guarantee.
People
Stephen Fretwell
Owner & Lead Locksmith
Stephen Fretwell established S F Locksmith in 1999, bringing over 25 years of experience in residential and commercial security. A DBS-checked professional, he specialises in uPVC and composite door repairs, anti-snap lock installations, and emergency lockout solutions. Known for prompt, courteous service, Stephen ensures all work meets strict quality standards with a two-year guarantee.
Questions
What areas do you cover?
We serve Doncaster and surrounding South Yorkshire villages, including Adwick, Armthorpe, and Mexborough, with same-day service available across our coverage area.
Do you offer emergency services?
Yes, we provide 24/7 emergency call-outs for lockouts, broken doors, and security breaches, with technicians typically arriving within an hour of contact.
How much do uPVC door repairs cost?
uPVC door repairs start from £160, covering parts and labour with a two-year guarantee. Costs vary based on mechanism complexity and required components.
Are your locks guaranteed?
All our locks and repair work come with a two-year guarantee, covering both parts and labour for complete customer peace of mind.
Can you repair old composite doors?
Yes, we repair composite doors of all ages, sourcing compatible parts to avoid full replacement. Our engineers handle misalignment, broken handles, and failed locking mechanisms.
Are you accredited?
We are members of the Association of Accredited Locksmiths, ensuring adherence to industry standards and professional conduct in all our services.
Videos
Reviews (32)
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.
Dean
Aug 10, 2026 Report
UPVC door into the garage, door wouldnt open, lock, mechanism issue. Contacted Stephen, the service was excellent, communicated well, fitted me into a busy day, let me know when he would arrive. Sorted the door, fitted new parts and got everything working well again. Transparent and fair pricing too. Highly recommend his services.
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.
Anita Thompson
Jun 29, 2026 Report
Needed a new lock fitted on my wooden shop door in doncaster. Steve arrived promptly the next morning like he said and the job was completed in 10 mins. Excellent service would highly recommend. Thank you .
Gill Beaumont
Jun 03, 2026 Report
A definite 5 stars from us, would give 6 if they were available!
Stephen took our call himself and visited our home promptly.
Great customer service, friendly manner and a wealth of experience.
Explained to us what the problem was with our uPVC/ composite external door. And also sorted a lock problem.

Fitted the quality products on the first visit and offered a range of solutions at different price points.

Good value for money.
Thank you Stephen,
Would recommend.
Chloe Hopkinson
Jun 02, 2026 Report
Great experience with Stephen today. My composite front door wouldnt open. He came out after a couple hours after I called and sorted the door and realigned it all for me! Very lovely man, would highly recommend.
Daniel Calland
May 30, 2026 Report
Have used them several times now, always prompt and gets the job sorted. This time we had a sticking door fixed and we have had new locks fitted in the past too
Ian Gelder
May 03, 2026 Report
Great service. Stephen came the same day to repair my French doors that were misaligned and sticking. Would highly recommend.
David Hewitt
May 03, 2026 Report
After calling Stephen at 08:02 am when I reported the problem (a lock issue) with our front door he agreed to come out and affect a repair on the same day - having also given me an estimate of the likely cost. He arrived at the time he said he would and very rapidly identified the issue and solved the problem, also correcting an alignment issue with the door and solving another issue with our uPVC French Window "on spec". The cost was as estimated, so no surpises! It is evident that Stephen is an expert in what he does!
Robert Geddes
Apr 30, 2026 Report
Great service. Came out same day i called. Stephen opened the door without any damage and replaced the broken mechanism. He provided a friendly, courteous, efficient and very professional service. If you need a locksmith Stephen is the one to call.
Nikki Ford
Mar 11, 2026 Report
Great service. Steve came round the same day and fixed the problem with our lock. Adjusted the door as well. Friendly and polite and I would recommend with any hesitation
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 Raven
Mar 23, 2025 Report
Stephen is a master craftsman at what he does. He talks you through and explains what and why the mechanisms have failed. He is easy to communicate with and provides you with the confidence you need, considering much of his work is likely to be related to your security and safety.
Zaiga Kalnina
Feb 21, 2025 Report
I highly recommend Stephen! Our door broke late last night, and he was here first thing in the morningno long wait, which was a huge relief. He was friendly, chatty, and incredibly professional, getting the job done quickly and efficiently. Excellent service from start to finish!
Steve Vickers
Dec 16, 2024 Report
Prompt and reliable service. Always shows up when he says he will. Steve is a careful worker and is very quick. Excellent service
Matthew Andrews
Nov 28, 2024 Report
Brilliant job completed made the job cheaper than it should have been and did the job super quick highly recommend
Joanne Brough
Nov 16, 2024 Report
Highly recommend , called 1st thing in the morning and my lock was changed at the time that was right for me . Would definitely use again .
Jon Moorcroft
Nov 06, 2024 Report
Was in a massive fix this morning when I couldn't lock my composite door. SF Locksmiths came out the same day, sorted the problem with minimum fuss for a reasonable price.

Highly recommended!
Roy Daley
Aug 13, 2024 Report
Have used SF Locksmith several times. Always good service from very knowledgeable locksmith. Highly recommended.
Lesley Townsend
Jun 08, 2024 Report
Major issue with old fitting resolved quickly
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.
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.
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.
Michelle Jurgens
Oct 03, 2023 Report
Great professional service.
Quick reponse to message enquiry and then came to do the job within 10 minutes.
Highly recommend to anyone and would not use another locksmith. Thank you so 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.
Zain Julius
May 16, 2023 Report
Class, very quick service. Will only use Steven from now on.
Jane Taylor
Apr 10, 2023 Report
Steven came straight out on Sunday morning to replaced my lock following a break in overnight First class service
Greg Curtis
Mar 31, 2023 Report
Super fast call out, fixed the issue immediately, really nice guy, Thanks
Robert Fenn
Apr 11, 2022 Report
Outstanding workmanship friendly and reliable goes the extra yard !!!
Recommend without hesitation .. 26th May
David Benton
Oct 11, 2021 Report
Had an urgent job and he came to it within 15 minutes and sorted it. Better service than this you cannot ask for.
Helen Brown
Apr 14, 2021 Report
Fantastic service, came when he said he would, good value. Thanks so much for a brilliant service