The premier mobile locksmith service in Northampton and surrounding towns. Lock and Key Expert can change or upgrade your existing locks, install locks or additional security from scratch, and open up a locked door in an emergency. The emergency locksmith service in Northampton is available 24 hours a day 7 days a week for your convenience. If you have uPVC door problems our locksmith service is second to none, providing door alignment, door opening, and a full range of mechanism, gearbox and cylinder repairs. We can also provide you with a full security survey of your domestic or commercial property to highlight any security issues and advise on what remedial works should be undertaken to resolve any problems.