However you view the rights and wrongs of banning religious ads (how would you judge what's acceptable? Scientology? Jedism?), what this exposes is the monopolization of British cinema screens by just these chains. Together they account for 80% of UK cinema attendance.
Richard Dawkins says UK cinemas should screen the Lord's Prayer http://gu.com/p/4eexk?CMP=Share_AndroidApp_Blogger