If you are after a pair of full on waterproof overtrousers with all the bells and whistles for winter walking, then look elsewhere, but if all you need are a pair of solidly made, generally waterproof trousers for occasional use, then these could be the best £40 you could spend. They come with a 3/4 length zip up both legs which makes them easy to put on quickly. They are only an 'aquafoil' DWR coating, but this has proved adequate for me so far and with the proper treatment with Nikwax or equivalent should keep the water out just fine.
There are other overtrousers with better features, but for £40 you can't go much wrong with these.
(Written by: lampetarian)