A good working estimate is about 9,300.
"There are 1,286 regional and local newspapers in the UK today,
including 27 mornings (19 paid-for and 8 free), 75 evenings, 21
Sundays, 526 paid-for weeklies, and 637 free weekly newspapers."
"There are 20 national newspapers (daily and Sunday) and over 1,300
local daily and weekly newspapers"
"The UK . . . has approximately 20 national newspapers (Daily and
Sunday), which are owned by 7 companies."
"The magazine sector is far larger than is generally appreciated.
- Estimates of the number of magazines published in the UK vary
- British Rate and Data (BRAD) lists almost 8,000 separate titles
which carry advertising
- In the last ten years, the total number of magazines has increased
by almost 25 per cent"
"there are now more than 8,000 magazines published in the UK (as
opposed to just over 1,000 newspapers)"
"There are over 8,000 magazines out there"
I hope this is helpful.
Best wishes - Leli
Searches on Google UK:
"magazines published in the UK" media guardian
"8000 magazines" UK
"19 OR 20 national newspapers" UK
"local newspapers in the UK"