For starters, it's not £12 - you have to add delivery onto that.
Secondly, we will be testing more ultra-cheap cables (such as the one mentioned earlier in this thread), and hopefully we'll find a true budget marvel. But until then, we can't recommend the Gotham by default.
With great cables costing from £35, surely it's within the means of someone to forgo a round of drinks or a takeaway meal for the sake of gaining a much better audio experience?