Bob Minchin wrote:

I've been getting a mix of timeout and 403 error

If you get a 403 error, you've reached *A* server, but possibly the
wrong one?

You checked you could ping 91.109.4.14 by IP addr, but what if you ping
homeworkshop.org.uk by name, do you get a different IP addr?

What DNS are you using? What if you temporarily try e.g. 1.1.1.1 or
8.8.8.8 ?