The club's former name, Darlington Grammar School Old Boys, was changed when they moved to Yiewsley Drive, which was located in Mowden.

[1] The club emerged in the post World War 2 period and was constituted in 1950 as Darlington Grammar School Old Boys.

In 1970–71 the Old Boys, with growing numbers of players and supporters, decided to buy land and build their own clubhouse and pitches.

In 2001 Mowden once again defied league position and reached the 4th round of cup, only to narrowly lose to Birmingham & Solihull who, at the time, were in Allied-Dunbar Premiership 2.

Mowden 'legends' of this era included the likes of Tuihana, Keeligan, Brown, Lowe, Irwin, Mckinnon, Sinclair, Oliphant, Mitchell, Sanderson, Kent and Mattison.

A newer cohort of legends include the Connon brothers, Zylon McGaffin, Alan 'Swags' Jones, Chris 'China' Peace, and Josh Waldin - who was later bestowed the honour of best looking man to ever play for the North East club.

Epi Taione (Newcastle, Sale Sharks and Racing Metro) put in some social appearances for the club.

The club has also had mini and juniors go on to play in the Guinness Premiership – Ross Batty (Bath Rugby), Tom Catterick (Newcastle Falcons) and Alex Gray (London Irish).

They currently, 2020–21 season, play in the RFU Women's top-level Allianz Premier 15s against clubs such as Bristol, Wasps, Saracens and Harlequins.

McLean was named captain of the England Elite squad on 18 January 2011, succeeding Catherine Spencer after she stepped down.

[citation needed] Once junior level has finished most will move on to the colts or one of the senior teams.