to the Staines fuel yard, at Staines West, until the early 1990s. During the second half of the 20th century, there were large-scale improvements to the road network around Staines. The A30 bypass was constructed in the early 1960s and included the building of Runnymede Bridge over the Thames. A second bridge, alongside the first, was required for the construction of the M25. The route of the motorway north of Staines was constrained by the Wraysbury Reservoir to the west and Staines Moor to the west. The Chertsey to Staines stretch of the M25 was opened in November 1981 with three lanes in each direction, but with a wide central reservation, allowing the road to be widened easily later. Four lanes in each direction were provided from outset between the A30 and the M4. The Staines air disaster occurred on 18 June 1972, when a Hawker Siddeley Trident, operated by British European Airways, crashed shortly after takeoff from Heathrow Airport. All 118 people aboard the aircraft, including the six crew members, were killed. Two memorials to all the victims were dedicated on 18 June 2004 in Staines. The first is a stained-glass window in St Mary's Church where an annual memorial service is held on 18 June. The second is a garden near the end of Waters Drive in the Moormede Estate, close to the accident site. Commerce and industry The first record of a market at Staines is from 1218, when the Sherriff of Middlesex was ordered to change the day on which it was held from Sunday to Friday. It had been discontinued by 1862, but re-established ten years later when the Town Hall was built. In 2022, the market is held in the High Street on Wednesdays, Fridays and Saturdays. An annual fair to be held in the settlement was granted to Westminster Abbey by Henry III in 1228. Initially it took place over four days at Ascensiontide, but the dates were changed to 7–10 September in 1241. By 1792, there were two one-day fairs each year, the first on 11 May for horses and cattle and the second on 19 September, known as the Onion Fair, for produce and trinkets. The fairs were abolished in 1896 by the Home Secretary at the request of the Staines UDC. Domesday Book records six mills in Staines in 1086, one of which is thought to have been at Yeoveney