Britain First mayoral candidate Paul Golding turned his back on Sadiq Khan as the new London mayor gave his victory speech on Saturday morning.
Earlier on in the elections results, the announcement of Mr Golding's 31,372 votes was greeted by cheers from within the crowd.
But as Mr Khan stepped up to the microphone to give his speech, Mr Golding turned his back away from the audience and remained facing the wall until the mayor finished.
Labour must reach beyond its own activists if it wants to win elections, Sadiq Khan has warned.
Read Sadiq Khan's full victory speech, as the Tooting MP promised to be a mayor for "all Londoners".
A list of results for London Mayor and the London Assembly