Ofcom is the independent regulator for the communications industry.
However, it is not responsible for complaints about accuracy or impartiality in BBC programmes. These are the responsibility of the BBC executive, as outlined in How to Complain to the BBC.
All other TV and radio channels, including ITV, Channel 4 and Sky, are covered by Ofcom.
If you are making a complaint to any of these channels about a broadcast relating to Palestine/Israel, it would also be worth sending the complaint to Ofcom, which can examine it from an independent perspective and impose penalties on the broadcaster if it sees fit.
Complaints can be made to Ofcom up to 45 days after transmission.
Website: http://consumers.ofcom.org.uk/tell-us/tv-and-radio/ (fill out and submit the complaints form)
Telephone: 0300 123 3333 or 020 7981 3040
Lines are open Monday to Friday 9am to 5pm
Post: Ofcom, Riverside House, 2a Southwark Bridge Road, London, SE1 9HA