http://www.number-10.gov.uk/output/Page13287.asp
The Government understands your concerns. However, whether or not to broadcast this programme is a matter for ITV. Under our broadcasting arrangements, responsibility for what is broadcast on television and radio rests with the broadcasters and the organisations which regulate broadcasting - the Office of Communications (Ofcom)(new window), the Governors of the BBC and the Welsh Fourth Channel Authority (S4C). They are independent of the Government and responsible for safeguarding the public interest in broadcasting. The regulatory bodies set out the rules and guidance with which broadcasters must comply.
Within this framework, it is the broadcasters' job to make judgements about what individual programmes should contain and the time at which they are broadcast. It is a long-standing principle that the Government does not interfere in programme matters, either on arrangements for scheduling or on content.
Neither the Government nor the regulators "pre-censor" programmes. Ofcom could not take a view about the acceptability of a programme on the basis of speculation, but only once it had been broadcast. It remains important to retain this principle even in sensitive cases and therefore Ofcom will act only if the programme as ultimately broadcast breaches their regulatory code. Among other things they would take into account any public reaction at the time.
If the programme as ultimately broadcast is offensive it is important that those offended make their views known to the broadcaster in question and Ofcom.
http://www.number-10.gov.uk/output/Page13287.asp