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

Definitely Siipiweikko sauces from the Finland to win!

Sacana.

https://www.wildfirefoods.no/shop

They have several sauces with varying strength.

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

https://theribman.co.uk/

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

uptonchilli.co.uk

tubbytoms.com

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

Salt.