Arabella, even the Tories in the UK parliament are quiet apart from a small number, there are a couple of Labour MPs but I think if they really went for it they'd get canned. Even at a local level there is little dissent.
In Scotland the SNP have a proper debate going on, despite the leadership saying 'no debate' at least as strongly as Labour. There have been Green and Labour politicians willing to speak up.
What really saddens me is the extent to which the entire Lib Dems are no longer Liberal.