Try Winch Solutions near Haydock ( J23, M6
http://www.winchsolutions.co.uk) I've bought plenty from them, all good stuff, and usually cheaper than most you find.
Make sure that you've got good recovery points both on the front & rear of the truck.
As a minimum I'd go for a 4 mtr long strap, and a 2 mtr long strap. at least 3 good quality D shackles, (If you have a towbar, get one or two that will just slip over the ball.)
A spade, something to put the jack on to stop it sinking when the ground isn't hard.
Tools, jack, spare bulbs, oil etc should be the norm anyway.
After that, you can build up as you find that something would have come in handy. Some people swear by waffle boards, I have a pair but have never needed to use them yet, on the other hand I also carry a chainsaw, and tend to need it a few times a year.
Personally I don't like the high-lift jacks, they can be very dangerous, I have a good wide based trolley jack that gets used for wheel changing.
