Hi and welcome to the madness. I get my refractories from Vitcas. They are based in Bristol which is hopefully not too far depending on where in Somerset you are. I bought a large box of blanket last time and still have several meters left for future use. You can have a piece but I’m based in Essex so not sure what would work best for you. Give them a call or let me know how large a piece you need and when you can collect. I also have some refractory left but that is much more difficult to figure out how much you will need.