Our very old wooden door which we really should change but at this moment can not afford to change would not lock. We called the services of Hallam locksmiths after looking through online reviews.
We were quoted a price over the phone and agreed an approximate time for the following day. They called to say they were on the way and completed the lock cahnge with no fuss.
I would definitely recommend this company and if you need a locksmith in Sheffield give them a call.