The customer called us out requiring a locksmith in Harrow to repair the UPVC patio door handle that was not lifting into position to fully lock the door. When shutting a UPVC door the handle has to be pulled up fully for the door to be locked. If the Key is not turning all the way round in the cylinder to lock the door when the handle is up then the chances are that the handle is not up all the way even though it may seem to be. This means that when the door is in the closing position that for some reason the bolts are not fully extending when turning the handle. This requires alignment of the door, possibly needing the hinges or the bolt keeps on the frame to be adjusted.