Someone has mentioned the posidrive screwdriver and yes it is easy to remove the complete assembly.
Upvc door locked no key.
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Presumably if it is a upvc door the lock is the type which screws to the door edge and locks with four latches and the main bolt.
Unscrew this plate and remove the latch from the door if possible.
Turn it in the direction that you normally turn.
Upvc door locksmith in the west midlands wolverhampton locksmiths covering walsall and cannock.
Step 2 look for a small set screw at the base of the handle.
Place the short end of the tension wrench into the lock as far as it will go.
Improvised lock picking tools can be made out of common household items like bobby pins and paper clips.
As people said you could drill it but sometimes that won t work.
Open the door and look for the latch plate along the door s edge.
You can open a locked door without a key and without causing damage.
It isn t easy without a key but it is possible.
With the lock being designed in 3 main bits and the central.