Yep, I got mine from here - M&S. Got some first years ago and were still going strong but couldn't find where I had put them so bought some new ones. Mine were £18 for a short sleeved top and long leggings.
helly Hansen - absolutely brilliant and also on sale on ebay at the mo!! I have been wearing mine constantly for about 3 months (obviously getting washed though
I got some from Aldi last year thermal tops and leggings meant for sking I think, they are the best that I have ever had, they are so warm yet thin under jods you just don't know you have them on- brilliant.
They have them in again I bought anothre pair last week £6.99 far cheaper than thermal jods as with these every pair of my jods are thermal.
Freezing weather bring it on - lol, my hubby bought me a hand warmer the one where you light the charcoal and put it in a little case and boy does it get warm, me thinks I'll shove it down each welly as my feet are never warm.