After booking someone from Checkatrade, I got a phone call saying they can't come out on Monday but can on Friday. So I phoned around. Not only did you come out within the hour, and the service was friendly, did the job quickly and was way cheaper than the people I originally booked. 10 out 10 all round.
Reply from RG Locks Of Reading

Our vans carry large amounts of spares and new locks to help us perform any service even when working out of hours We will attend to any emergency including broken locks and keys as well as lockouts and after-burglary repairs You can be ensured that all repair work will be carried out by professional locksmiths who would not damage your door and carry out the job as soon as possible to help you carry on with your daily activities as soon as possible We aim to arrive within the hour unless unforeseen circumstances accrue such as bad weather.