Jews weren't given separate laws in the UK, what they were given was a Jewish advisory council for civil matters (ie: marriage, divorce, inheritance) which would make a judgment on the case and "SUGGEST" to the legal court that this should be the judgment. From that point on it was up to the British court to uphold the Advisory councils suggestion or come up with their own. The Advisory council has NO say however on criminal matters, where the rule of the country is applied.

I see no problem with instituting the same thing for Muslims, however will they be happy with that?