The building process was interrupted by hostilities after the site was acquired in 1939, being at one time requisitioned as a barrage balloon station, and at another having windows and doors damaged by a bomb falling in Saltwell Park, just across the road.
In 2012–13, considerable reconstruction and renovation work to the frontage, foyer and bar of the theatre was carried out, thanks to a generous legacy from former member Jim Ord.
Further alterations in 2015 have added another dressing room and a small office to house archival material, as well as providing easier access to the backstage area from the Wardrobe facilities.
At a meeting of the British Drama League in the twenties, the Progressives' representative handed over to George Bernard Shaw royalties of seven shillings and fourpence, possibly on the takings of Pygmalion which had raked in the grand sum of £16.00.
The group and the Theatre are still going strong, thanks in part to the generosity of Gateshead Metropolitan Borough Council, Northern Arts and the National Lottery Commission, but mainly to the continued efforts of the members (volunteers) and the support of their loyal audiences.
The Signalman (by Charles Dickens and adapted by Matthew Harper) was successful in winning the first round and make it though the semi-final of the All England Theatre Festival, held in Saltburn.