Current Doctor Who star Matt Smith is to unite with past Time Lords including Tom Baker and Sylvester McCoy at an event in London to mark the cult Tv show's 50th anniversary.

The actors will all appear at the 50th anniversary celebration event in the British capital in November (13), along with another former Doctor Who Colin Baker.

The convention will run over three days and feature question-and-answer sessions with cast members, a special effects display from the show's resident expert Danny Hargreaves, and masterclasses with Doctor Who's 'monster choreographer' Ailsa Burke.

The event will run from 22-24 November (13) at London's ExCeL exhibition centre, coinciding with the screening of the show's anniversary episode on 23 November (13).

The special installment will reportedly feature new castmember John Hurt as well as a reappearance by former Time Lord David Tennant and his onscreen assistant Billie Piper.