Andover is a town in the Test Valley district of Hampshire, England. The town is on the River Anton, a major tributary of the Test, and lies alongside the major A303 trunk road at the eastern end of Salisbury Plain, 18 miles (29 km) west of the town of Basingstoke. It is 14 miles (23 km) from Winchester, 35 miles (56 km) north of Southampton and 65 miles (105 km) from London.

Test Valley is a local government district with borough status in Hampshire, England, named after the valley of the River Test. The council is based in the borough's largest town of Andover. The borough also contains the town of Romsey and numerous villages and surrounding rural areas. A small part of the borough at its southern end lies within the New Forest National Park, and part of the borough north of Andover lies within the North Wessex Downs, a designated Area of Outstanding Natural Beauty.