Minehead Sawmills stock a large amount of wire fencing:

Heavy PVC coated chain link in 25m rolls – 900mm (3ft), 1.2m (4ft), 1.8m (6ft)
Wire netting galvanised & pvc coated in 10m, 25m and 50m rolls
Welded mesh 2×2 in 30m rolls, 900mm (3ft), 1.2m (4ft), 1.5m (5ft), 1.8m (6ft). Also sold by the meter, cut to length.

A huge choice of wire fencing is available.