thanks for all the input,
bazzias that link was interesting reading, food for thought.
im definately going to sort the drainage out in the field next summer, the worst gateway is blocked off with electric fencing now, i have taken down some fencing and made a temp gateway on a drier bit of the field, my main concern is my horses hurting themselves, i.e pulled muscles in the mud, and with it only being the start of winter, its only going to get worse.
but you guys have given me plenty to think about and things to do to get us through till i can sort it out properly
thanks so much