Linear Park. Commerce and industry Parc Tŷ Glas Industrial Estate Parc Tŷ Glas is home to the offices of the television station S4C and of the National Eisteddfod of Wales. HM Revenue and Customs (HMRC) formerly occupied Ty Glas, an 18-storey tower block (Phase 2), the 11-storey Gleider House (Phase 1), Ty Rhodfa (formerly the Valuation Office Agency) employing more than 2,700 staff on site in 2007 and ground floor offices for an enquiry centre or IREC. In 2020 the tax office vacated the site and moved to Central Square in the city centre. The HM Government buildings are due to be demolished and replaced by up to 250 houses, 70 retirement apartments, a care home, employment units, and a health centre. In 2003, Cardiff Lifestyle Shopping Park was built, comprising six stores. The current occupants are Marks and Spencer Simply Food, Boots, HomeSense, Starbucks, DW Sports/MiFit and Pets at Home. ROF Cardiff Llanishen played a role in the Second World War effort. With the development of ROF Bridgend, a Royal Ordnance Factory, ROF Cardiff was opened in 1940 to take the explosives from Bridgend and produce tank, anti-tank and field guns. Air defences against paratroopers were placed in nearby fields, and facilities were strengthened in 1941 when the Royal Air Force established both a RAF Regiment base and a glider training facility. In 1943 the United States Army began using the facilities to hold troops and undertake local training, including basic flight in Tiger Cubs. The Americans left in June 1944 as the Allies prepared for D-Day. In 1987 ROF Cardiff became an Atomic Weapons Establishment. It closed down in February 1997. Since its closure, ROF Cardiff has become the site of major housing developments by George Wimpey (called Parklands), Barratt (Ty Glas Square) and Leadbitter (Llys Enfys. Bellway and Persimmon/Charles Church created further housing between the AWE site and the HMRC building. The site will also host a new public open space, the final element to be constructed (2010), to include a children's play area, sports pitch and community garden. Part of the George Wimpey development has been named Watkins Square and the Barratt development Tasker Square – after Wales' famous Victoria Cross winner Sir Tasker Watkins, who died during 2007. Other offices The Orchards complex, formerly the site of the National Coal Board's regional office, housed the offices of the Higher Education Funding Council for Wales, and