Speculation is mounting over the names of the sixth and seventh Harry Potter books after two titles were registered as trademarks in the UK.
The names 'Harry Potter and the Mudblood Revolt' and 'Harry Potter and the Quest of the Centaur' were registered as trademarks with the UK Patent Office six weeks ago.
They were registered by a company called Seabottom Productions which, The Sun claims, shares an office with the London lawyers of Warner Brothers, the studio behind the Harry Potter films.
However, Harry Potter fans have pointed out that other titles have been registered in the past but were never used.
