Series 3 was the third series of London's Burning, first broadcast in the UK on ITV from 30 September 1990 to 18 November 1990. It comprised eight episodes.
This was the first series to use the new Nomex uniforms that wouldn't be fully adopted by the LFB until late 1991. The uniforms in series 2 were trial uniforms with noticeable differences. The new helmets seen in episode 8 are trial helmets, with larger visors and a metal clip at the back which the official helmets did without.