They are Le Chameau Chasseur leather lined boots -
this model. There is new version of this boot - see
here. They cost about £190 in the UK, though I have heard you can get them considerably cheaper in France. Don't know if this is true. Having had 2 pairs of these - the first pair took many years of abuse and the second are halfway there - I can thoroughly recommend them. They seem prohibitively expensive, but since they last for ages and are extremely warm and comfortable even for quite long walks, I think they are reasonable value. They're certainly well made, I should think using proper lasts, unlike most. The UK distributor is
GMK and I wouldn't be surprised if the one's that Ray wears are part of a marketing deal with them. Then again, they're so good, he'd probably splash out anyway. One of the best things is the differing calf sizes which means you can get a really good fit. Aren't I the wellie bore!