Quentin Letts returns with another series offering a witty and thought-provoking look at some of Britain's cherished insitutions. Over the next four weeks he casts a quizzical eye over Marylebone cricket club, the public library, the Kennel Club - and the RAF.

All over the country, events are being held to commemorate the 70th anniversary of the Battle of Britain, when the bravery of the Few saved these islands from a Nazi invasion. Even if some historians have had the temerity to suggest it was actually the navy wot done it, it's an opportune moment for the RAF to remind us of their historic contribution, and why we need them in the future.

Which is why exactly?

Britain was the first country in the world to have an independent air force. To get rid of it is unthinkable, isn't it?

Defence secretary Liam Fox has promised that the Governments strategic defence review will be ruthless and unsentimental - will he listen to the RAF's critics? They claim that a bloated higher command structure in Whitehall argues for fast jets we cant afford for a war we wont be fighting. Oh - and its uniforms are horrible and they can't march properly.

Historian Max Hastings, War correspondent Sam Kiley, former defence secretary Geoff Hoon and retired Colonel Tim Collins are among those who join Quentin to ask the question, What is the point of the RAF? Show less