There should be something that suits you here: https://www.dorsetchillishop.co.uk/ !

I’m quite the fan of Big Jim’s Kitchen sauces. Nothing ridiculously hot though if that’s what you’re after

https://theribman.co.uk/

https://www.wildfirefoods.no/shop

They have several sauces with varying strength.

uptonchilli.co.uk

tubbytoms.com

A couple of local businesses close to me, both have very good sauces with varying heat levels and flavours

Definitely Siipiweikko sauces from the Finland to win!

Sacana.

Salt.

The English have HP. I suppose it’s technically mildly spicy.