I guess some tourists do, but in my anecdotal experience they are in the vast minority. I can't recall ever having heard someone refer to the Tube as the 'Metro

I guess some tourists do, but in my anecdotal experience they are in the vast minority. I can't recall ever having heard someone refer to the Tube as the 'Metro' in 15 years of living in London. I think the name of the Metro newspaper may refer more to 'Metropolitan', as it is published in many different cities throughout the UK. Also, they probably would not have been allowed to publish a newspaper called 'The Tube' because of copyright.