Thanks for the advice!
I know now that I have to bring those extra toasty items...and a nice thermous of tea or hot chocolate for after the ride!
It was just weird, I mean, I can expect a bit of a chill- but this is downright freezing! It's not something that I remember happening before and that's why I was a bit worried.
Oh well- we'll see if it continues into the summer...ambient temperature and all....

Kimba