Dwill wrote:
Hi.

Noticed in this cold weather that one window doesn't close as flush to
the frame as it could/should.

Any pointers on how to rectify, recently bought the house and windows
have been in a while...

Cheers :-)
When I had this problem it was down to poor frame fitting by the
installers. Is your gap near the wall? If so it could be due to the same
mechanism.
Solution is to remove some of the frame screws and adjust the packers. -
a summer job!
For now a bit of foam draught excluder should fix the problem.

Bob