Our house has Anglian windows which are approx. 20 years old. All 7 upstairs windows have window locks which don't fully lock.
I did have a window fitter try and sort them out a few years ago, and he adjusted the toe and heel, but couldn't get any to fully lock.
None of the downstairs locks are a problem, which makes me wonder if the Anglian fitter did something wrong, but then they wouldn't have been left like that from new.
Any suggestions as to how to sort these out? I'm happy to try repositioning the glazing if that is still the issue.