Here's what I'd suggest to get started & how much they cost at Sportfish:
http://www.sportfish.co.uk/fly-fishing/fly-tying
Super AA vice = £9:99
Heavy spigot bobbin holder = £2:98
Dubbing needle = £1:75
Bobbin threader = £1:99
Medium long nosed hackle pliers = £2:50
Standard fly tying scissors = £3:99
Learn to whip finish by hand. There are various youtube videos & beginner books which show how to do this.
Veniards clear varnish = £1:99
If you want Sally Hansen's Hard as Nails for buzzers, it's cheaper to get it in a supermarket!
8/0 pre-waxed uni-thread in black, brown & olive = £2:20 each
Various hooks
Then you need the materials for each pattern. To keep costs & wastage down, just find out what each pattern requires & get the items individually.
A £50 initial budget should see you well on your way.