Nellie I have no problem with political satire, and I believe, like you, that it is a sign of a healthy democracy and of course politicians should be challenged and often comedians do that better than anyone, but what we are getting from comedians in Britain today is not political satire and it is not holding politicians to account it is just a stream of personal invective targeted at individuals. It is not funny, it is not political, it is not satirical and it is oh so boring.
Jon Stewart in the USA is funny, political and satirical, he takes a scalpel to the US body politic and fillets it. This is why he is such compulsive viewing.
We are desperately in need of British Jon Stewart who will not let his own political views colour his satire and who will direct his satire equally at all political parties, not just those he doesn't support.