The Sunday Trading Act 1994 is an Act of the Parliament of the United Kingdom governing the right of shops in England and Wales to trade on a Sunday. Buying and selling on Sunday had previously been illegal, with exceptions, under the Shops Act 1950. Background Following the defeat of the Shops Bill 1986, which would have enabled widespread Sunday trading, compromise legislation was introduced in July 1994 in England and Wales, coming into force on 26 August 1994, allowing shops to open, but restricting opening times of larger stores i.e. those over to a maximum of six hours, between 1000-1800 only. Large retail park shops usually open 1100-1700, with supermarkets more usually choosing 1000-1600. In Central London, for example on Oxford Street, many shops choose to open from 1200-1800. This includes large 24-hour supermarkets, which meant that supermarkets have to close on Saturday night to allow six continuous hours of shopping within the allotted time. However, some of the stores open half an hour earlier to allow people to "browse", but do not allow sales before the allotted time. Deliveries to the large stores are not permitted to be loaded or unloaded before 0900. Large shops were excluded from opening on Easter Sunday and Christmas Day (when it fell on a Sunday), but the Christmas Day (Trading) Act 2004 made it illegal for large shops to open on Christmas Day regardless of whatever day of the week it falls upon. Shops in Scotland, where Sunday trading had always been generally unregulated, retained the right to open at any time. However, the right for workers in Scotland to refuse to work on a Sunday was later conferred by the Sunday Working (Scotland) Act 2003. Northern Ireland has separate laws governing Sunday opening. The Sunday Trading Bill had met with considerable opposition from the Lord's Day Observance Society and other groups such as the Keep Sunday Special campaign, a coalition body which includes the shopworkers' trade union USDAW. USDAW finally agreed to support six-hour Sunday trading in return for a promise that Sunday working would be strictly voluntary. This decision played an important role in encouraging many Labour MPs to back the bill in a free vote. They asked for a guarantee of premium pay, but the Government's position was that that was a matter for negotiation between shopworkers or their unions and their employers and the Act says nothing about