Ocean flex cable now up to 15% cheaper on http://kojaycat.co.uk with prices starting at just £2.71 for 16mm2 110 amp 6 AWG tinned marine grade battery / starter cable.
£3.91 is the starting price for 170 Amp 25mm2 4 AWG cable per metre.
35mm2 240 amp 2 AWG starts at just £5.23,
50mm2 345 Amp 1 AWG starts at £7.00,
70mm2 485 amp 2/0 AWG starts at £8.32
and finally 95mm2 500 amp 3/0 AWG is from £10.97/m