And the Royal Air Force.
Well, I like to emphasise the Royal Navy aspect as most people miss it. The Battle of Britain could have been "lost" - with air cover becoming scrappy over the the channel - and the Germans still wouldn't have had a prayer of getting clear sea-roads.
I mean no disrespect to the "few", but it was the Royal Navy that allowed Churchill to famously remark that "We look forward to an German invasion - and so do the fishes".