The Craghopper Kiwi Pants are really comfortable, can be found occasionally in TK Maxx for the price of a cup of tea and are flipping bombproof.
Alternative ones for climbing in and good for general hiking if you ever go for a dander – Quechua make a really comfy pair of outdoor trousers. Speak to Fyfe as he has a red pair. (As does Ronan and Stuart).
Happy Christmas to you both – Prebble, try not to drown!