I think all printed mags are having a hard time.
It's getting awfully hard to deliver value given the amount of free content that is already on the web - especially the stuff produced by keen enthusiasts, some of which is of good quality, and far too frank to ever appear in a printed publication that carries adverts.
And, with some exceptions, people who produce free material are strongly despised by those who make a living producing printed material...
In my business (electronics) we get a pile of trade mags. They are much worse that any UK aviation mags. Virtually zero content in most cases. The "articles" are all advertorials, appear alongside adverts from the company.
But some are not too bad, in the case of specialised stuff. The other day I read a nice educational piece of
LVDTs. Maybe the UK mags could try that formula. I guess the challenge would be to find somebody from Garmin UK willing and able to string enough words together to produce an article from the pilot's POV.