Born in Liverpool, Kebty-Fletcher was educated in that city and on the continent of Europe, and was a linguist, speaking five languages. During the Second Anglo-Boer War he worked as a correspondent for the Liverpool Post. By 1910 he was the chief partner in the firm of Messrs George Fletcher, provision merchants, and a former president of the Liverpool Produce Exchange and a trustee of the Mersey Quay and Railway Carters Union. In 1912 his address was given as "The Paddock", Hooton, Cheshire.
Active in Unionist politics, by 1900 Kebty-Fletcher was a member of Liverpool City Council.  He stood at the 1906 General Election as Conservative candidate for Rossendale but lost to the Liberal, Lewis Harcourt. He was elected Member of Parliament for Altrincham at the December 1910 general election, gaining the seat from the Liberals. As the Liberals were able to form a minority government with support from the Irish Parliamentary Party, Kebty-Fletcher found himself on the opposition benches. In May 1913 Kebty-Fletcher announced his immediate resignation from parliament by appointment as Crown Steward and Bailiff of the Manor of Northstead, causing a by-election.
In his short parliamentary career he was involved in two controversies. Firstly, in 1911, he made an attack on the Chancellor of the Exchequer, David Lloyd-George accusing him of appointing a partner in his law firm to a government post. In 1913 he attacked the government over the Marconi scandal.
- "Commoner Resigns". The Advertiser (Adelaide). 3 May 1913. p. 20. Retrieved 27 April 2014.
- "Thursday's Polls". The Times. 10 December 1910. p. 10.
- The Daily News Year Book, 1912
- "Parliamentary Directory". Slater's Manchester, Salford & Suburban Directory, 1911 Part 4: Suburban, Banking, etc. Historical Directories. 1911. Retrieved 2008-09-15.
- "Liverpool Tories on Church and War". Liverpool Mercury. 24 April 1900.
- "Liverpool City Council". Liverpool Mercury. 3 May 1900.
- "Lord Chancellor's Office. Appointment of J.R. Kebty-Fletcher, M.P., as steward and bailiff of the Manor of Northstead.". The National Archives. Retrieved 27 December 2013.
- "Consolidated Fund (No.2) Bill (HC Deb 20 June 1911 vol 27 cc153-215)". Hansard. 20 June 1911. Retrieved 2008-09-15.
- "Marconi Companies (HC Deb 25 March 1913 vol 50 cc1476-9)". Hansard. 25 March 1913. Retrieved 2008-09-15.
- Leigh Rayment's Historical List of MPs [self-published source][better source needed]
- Hansard 1803–2005: contributions in Parliament by John Kebty-Fletcher
|Parliament of the United Kingdom|
Sir William John Crossley
|Member of Parliament for Altrincham
December 1910 – 1913
Sir George Hamilton, 1st Baronet