The strength of the UK patent system ...
is mostly that it does not grant patents for trivial or frivolous applications that are not really inventions, such as amazon's one-click. If the UK patent office awards a patent, it's probably for a genuine invention rather than the bogus trash that the USA patent office accepts.
So above all, any changes to UK patent law should NOT result in the dilution of its present strengths. If it causes patents comparable to the present to happen faster, then fine -- but any weakening of its present diligence or any increase in the present scope would be a very bad step.