A few months ago there was a lot of hype about a "A Portrait Of England" or something like that, here are a few things that I remember....
Hans Holbein's famous portrait of Henry VIII.
Routemaster. ( I dreamt of travelling in one since I was about seven.
The FA Cup.
There were obviously a few more but I'll check it out later.
Apart from the FA cup, they're not really traditions....they're more like notable landmarks....