Thanx for the reply Hojo
Recap on the locked window
when we moved in, the handle was in the locked postion with the window always open couldnt be closed.
I took the two screws out and reset the lock.
I closed the window and tried to open it and i pushed the button (some have a button to open them..not this one..sigh!) on the lock and CLICK!!!... it locked! and cant be opened
The window with the handle up!!

..beforeI locked it by accident
UK uPVC top long window
close up
The Key hole pop's up when unlocked.
If it cant be picked i dont mind drilling it, the handle is in a bit of a state.
but i've never picked a lock and will give it a go if possible
Wildbrew
Ps
I can drill this type of lock

?