I've been using veg tan leather which is c. 5-5.5mm thick, and have been happy with Clayton- Spire Leather for the last 10 years. Very sadly, they went bust a while ago, and I am still looking for a replacement supplier
I have samples from Thomas Ware (Perfect, but a little thinner than I wanted) and FJF Baker. Again, beautiful, but this is much harder than I need: as its for its sound quality - so needs to be soft.
Any other recommendations of tanners to try? Ideally in the UK, but am open to other ideas if I can't source anything here.
Thank you!