thanks guys.
i went with these in the end..
Wax Mens Dodo Snow Boots Black: Amazon.co.uk: Shoes & Accessories
if they still allow any water in, hopefully not, i can then get waterproof socks but this initially keeps the cost low.
With a decent pair of waterproof trousers over the top they will most likely do a decent job
. Thing with waterproof socks is if any water gets in it can't get out so they can get really horrid if that happens but it's not really such a problem on relatively short rides and usually happens if you try to use them with shorts.
I don't know if I'm the only one but hate full length leggings .. it's mild enough so I only wear some longer roubaix ones which just cover my knees (which get cold) and waterproof 'long shorts' which are meant to be for kayaking but actually work really well most of the year.
@Neptune - have you seen these :
Vaude Bike Gaiter long
The material is really lightweight and easy to fasten. I don't like overshoes much - have a pair of neoprene Pearl Izumi Elite Barrier ones which fit over MTB shoes / trainers but they are tight at the sole and despite a huge wide velcro strip to fasten at the back are prone to loosening when they get very wet so they only get used if I don't want to wear my boots.
If you are out in the wet a lot and are willing to fork out, these are at the other end - but are actually well worth the money for the lack of hasstle / warmth / effectiveness trade-off :
Shimano MW81 MTB Shoes - Tweeks Cycles
I use these under the neoprene cuffs to correct as far as possible the inherent weakness in any shoes of this sort (letting water in the top when it runs down your leg) :
Apollo Europe | Scuba Diving | AV-2 Scooters | Bio-Fins | Bio-Seals | Bio-Filter
Also slap a 2 1/2 inch wide pair of neoprene ankle cuffs used for waterproof trousers with a velcro tab over the top and the end result is about as waterproof as you need if you're not doing a 4 hour ride in torrents. Works a treat and feels really snug. I don't bother with these if I wear trousers (which is pretty rare).