Can also recommend the Witches Britches, I purchased a pair a couple of months ago and loved them. The fleecy knees are good and the lycra itself just feels fantastic to wear. Its a bit cold here for witches britches at the moment but I am riding regularly in my Ice Queen windproof fleece (so snuggly) and a pair of Daddy Long legs for commuting as I loved the lycra that much, they keep the wind of my shins and knees really well. I've always found Ground Effect service excellent the prices are very good and most stuff has arrived with me in the UK from NZ within 4 days of ordering (something some UK companies can't manage) and I've (touch wood) not been stung for VAT/Import duty yet (thanks Royal Mail!).
In fact I think I'll go on their site for a peruse now....