Time Out says
While everyone else stays at home gorging on turkey, take advantage of London minus the heaving crowds on a Christmas Day tour of the capital. You’ll pass some of the city’s famous landmarks, including Big Ben and the Houses of Parliament, Trafalgar Square, St Paul’s Cathedral, Downing Street and the ominous Tower of London, all decked out in festive splendour. You’ll also get the lowdown on the city’s history as wander through London. Meet at Golden Tours Visitor Centre Victoria. Find out more and book here.