Way, way beyond the Proms: To mark the sesquicentennial of the hall’s opening (Queen Victoria was all verklempt), the Beeb recounts some of the more momentous and offbeat events to have happened there, from the first-ever sci-fi convention (also the public debut of the only-the-English-could-drink-it concoction Bovril) to a séance for Arthur Conan Doyle to the first-ever sumo match outside Japan to (this may have been the weirdest) John and Yoko’s Alchemical Wedding. – BBC