It's the England versus Wales rugby union showdown on Saturday, the latest instalment in a rivalry that stretches across nation, class and playing styles. To discuss the roots and the history of a contest that dates back to 1881, this week's guest is Huw Richards, rugby historian, journalist and author of 'The Red & The White: A History of England vs Wales Rugby'. Huw examines the myths, legends and realities of rugby's most complicated rivalry.

For more on the history of rugby and the other football codes, take a look at www.rugbyreloaded.com (where you can find the links for this episode) and follow me on Twitter at @collinstony