I would love a list of FP friendly products targeted towards the UK.
All I can get locally (East Yorkshire) at present is Clairefontaine and Oxford Optik.
The Clairefontaine paper is in Rhodia & Europa pads as well as under their own name.
Some Supermarket chains do get Clairefontaine pads as part of a 'back-to-school' range in August and I am also hoping for a repeat in December/January '20 as I scored Clairefontaine A5 Koverbooks silly-cheap.
Wilkinson (Wilko) used to have Silvene Memo books and exercise books cheap but do not do them now. It's all their 'own' brand light-weight paper, 60 or 70gsm that I know nothing about.
Get a truly bad pad and you get bleed-through affecting two sheets & just marking the third sheet.