They are not cheesemakers, but if you are in London it is worth getting along to Neal's Yard
cheese shop, which has a fantastic range. There are also some great cheese stalls in the nearby Borough Market
, which has cheeses from the UK and Europe. (the 24month aged comte is a favourite of mine).
Not sure where abouts in Wales they are based, but the perl las
is one of my favourite Blues, so definitely worth hunting down some.