The ride departs at midday, and takes a 14-mile route through the heart of London taking in Trafalgar Square, Big Ben, Buckingham Palace and St Paul's Cathedral before a finishing party at Bishopsgate. The pace will be leisurely, and will feature a tea break in the park.
http://www.cyclingweekly.co.uk/news/latest/440053/tweed-run-returns-to-streets-of-london.html
A tea break! How splendid!