Look I don't know why the UK does not allow parlianmentary footage to be used in anything other news/documentary programs. I have to admit I don't see this as totally unreasonable. Like all laws they are pros and cons to the law. Since footage is available to public just not in movie there is nothing stopping you viewing the footage. That surely cannot be sensorship but some sort of ill defined copyright application. I am not sure I want to public funds to create footage for movie makers to use to push their own agendas.