On 09/11/2019 18:44, David WE Roberts wrote:
I bought a two drawer wooden filing cabinet (well, one filing drawer and
one shallow drawer) on Gumtree. No key, but checked it out and all looked
good.

Now we have lugged it up to the office it won't open.
It seems to be locked.
I assume the mechanism may have shifted during transit.

Does anyone know how easy these office furniture locks are to pick?

Easy..
put a small screwdriver in and put slight pressure in the unlock direction.
use a paper clip to run the end along the tumblers.
usually open in a few seconds.