Ainslie was an
arable,
dairy and
sheep farmer at Home Farm,
Mildenhall, Wiltshire. In the 1950s, he became a
radical Liberal of the age inspired by
Jo Grimond, and he was passionate about European unity, state education, and world development. In 1962, with the support of others, Ainslie re-formed the moribund
Devizes Constituency Liberal Association and established the Thrifty Orange in
Marlborough, an early
charity shop, to raise funds for it. In 1964 he was first elected to
Wiltshire County Council, and he continued to represent his rural area at that level for nearly thirty years, until 1993. Although during those years the county was predominantly
Conservative, while Ainslie was an outspoken Liberal, he served as chairman of the county's Education Committee from 1973 until 1977. He stood unsuccessfully for Parliament in Devizes at the
1974 and
1979 general elections, and when in 1982 the
SDP-Liberal Alliance agreed a division of constituencies between its two parties, it was a blow to him that he had to surrender Devizes to the
SDP. Ainslie was a member of the local Alliance negotiating committee for
Gloucestershire and Wiltshire, and he gave up his own position in Devizes to allow a younger Liberal to contest
Stroud. However, he remained a strong supporter of the Alliance and later of the merged party, the
Liberal Democrats. This campaign may have helped the Alliance to succeed at the
Wiltshire County Council elections of 1985, when its members found themselves forming the largest political group and Ainslie became
Chairman of the County Council, a post he held until 1989. During the same period, he was simultaneously chairman of the county council's Policy (later Policy and Resources) Committee, which made him the
de facto Leader of the council as well. which campaigned against pollution and excessive water abstraction. ==Family==