Keeble attended Colchester Royal Grammar School, where his preferred sport was rugby, playing as a stand-off half.

He played football with Arsenal as a schoolboy and locally for King George V Boys Club and Colchester Casuals.

[6] However, Keeble's move to Newcastle coincided with his National Service with the Army, and long periods away impeded his progress.

He was the last surviving member of the team that beat Manchester City in the 1955 FA Cup Final, and has a road named after him in North Seaton, Ashington.

[13] Signed again by Fenton, Keeble moved to Upton Park in October 1957 for £10,000, joining a West Ham side that had earned 12 points from their first 12 Second Division games of 1957–58, with inside-forward John Dick yet to score in the League.

[8][15] Keeble had made his debut for the Irons in a friendly fixture, a testimonial for Dick Walker against Sparta Rotterdam.

[1][16] The 1958–59 campaign saw Keeble score 21 top-flight goals, including four in a 6–3 win over Blackburn Rovers, even though he had missed the final two months of the season due to injury.

[1][17] In April 1959, Keeble and teammate Malcolm Musgrove played for a Football Combination representative side against a Select Dutch XI in Amsterdam.

[1][17] Keeble made a total of 84 League and FA Cup appearances for West Ham and scored 51 goals.

[21] He died in January 2018, at the age of 87, by which time he was the last surviving member of Newcastle's FA Cup winning sides of the 1950s.