Actually, it's not all that weird: the UK's reasonably free of snakes because the Ice Age was too tough for most indigenous reptiles, and the English Channel is too cold to allow too much immigration from the mainland.

Right. But what I meant when I said it would be "weird," was that it would seem odd to me, being in a place where reptiles are so scarce, when I grew up in a place where reptile diversity and numbers numbers are quite high. :-)