There are loads of brands! I've not had much experience with most of them, but I can really recommend Thorowgood.
They come in far more stylish models than the one pictured in the thread about them: http://www.thorowgood.com/uk/products.htm
. I think the T4 style (synthetic + suede panels) looks really good.
Apparantly they usually have a pretty good fit (come in cob and high wither) and I've always found them really really comfy. A pony at my yard has a couple of years old T4 Pony Club Saddle and even though it's technically too small for me to ride in, it's LOVELY. My favourite saddle out of about 10 that I ride in at the yard.