So the story got worse. Yesterday the Times (UK) newspaper ran an article saying that the British police forces equipped with the G36 may reconsider issuing the rifle if the German army drops the rifle. Due to the Times' paywall here's a link to another article which also covers it: http://www.special-ops.org/british-anti-terror-police-are-using-assault-rifles-that-do-not-shoot-straight-in-hot-weather/
The whole thing is a bit laughable, the police rifles are semi-auto for a start, Britain does not have Afghanistan's high summer temperatures and when the hell are police or security forces ever going to be in a prolonged firefight? Never, if they are they'll be calling for the SAS long before their rifle's start losing zero.