In the February 1974 and October 1974 elections, Aspinwall was the Liberal Party candidate for Kingswood in the rural county of Avon, coming third in both. He changed his allegiance to the Conservatives in 1975 as "the priority was to defeat socialism" and was elected as the Member of Parliament for the seat in 1979, beating the Labour incumbent, Terence Walker, by 303 votes. He served there for one parliament until the 1983 election, when he stood for and was elected for the new constituency of Wansdyke, which he represented for three further parliaments until his retirement at the 1997 general election.
Born in Bootle, Aspinwall had two brothers, Frank and Raymond. He won a scholarship to Prescot Grammar School, but his mother died when he was 14 years old and he went into care. He joined the RAF after leaving school. While stationed in Wiltshire in 1954, he met his future wife, Brenda Squires, whom he married in 1954. He and his wife had three children. Jack Aspinwall died of cancer at Willsbridge, near Bristol, England, on 19 May 2015, aged 82.
- "Who's Who". ukwhoswho.com. Retrieved 21 May 2015.
- "Jack Aspinwall, politician - obituary". Telegraph.co.uk. 2015-05-20. Retrieved 2015-12-28.
- Notice of death of Jack Aspinwall Archived 20 July 2015 at the Wayback Machine., bristolpost.co.uk; accessed 21 May 2015.
- Profile Archived 22 May 2015 at the Wayback Machine., bristolpost.co.uk; accessed 21 May 2015.
- "Former Tory MP for Kingswood, Jack Aspinwall, dies". BBC News. Retrieved 21 May 2015.
- Times Guide to the House of Commons, Times Newspapers Limited, 1992 edition.
- Hansard 1803–2005: contributions in Parliament by Jack Aspinwall
|Parliament of the United Kingdom|
| Member of Parliament for Kingswood
|New constituency|| Member of Parliament for Wansdyke
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