The Greenwich Admirals side was founded in 2001 as the brainchild of Chief Executive of the London Broncos' Lionel Hurst and under the guidance of development officer Graeme Thompson.

An introductory game was played on 11 August 2001 against South London Storm, the Admirals team being made up of rugby union players from Old Brockleians RFC and Greenwich RFC and players borrowed from Storm; Greenwich won 28 - 24.

Greenwich beat Kent Ravens in a play-off eliminator to set up a grand final against new boys Broadstairs Bulldogs which they lost.

In 2007, the first team finished third in their division on points difference and were eliminated at the semi-final stage of the divisional play-offs.

This was shown in 2009 when Jacko Brennan and Gary Sergeant were both selected in the 32-man England squad for games against France and the Australian Institute Of Sport.

Greenwich Admirals now play their games in Kidbrooke Lane, Eltham, at Blackheath FC Well Hall ground.