John "Jack" Speakman (1873 - 7 August 1942) was a trade unionist and Labour Party politician.
Born in Erith, he was the son of John Edward Speakman, a civil engineer. In 1896, when he married Elizabeth Davan, he lived in the King's Cross area of St Pancras. At the time he was an was a omnibus conductor and at the 1901 Census he was a tram conductor and living at Peckham. By 1911 he was a trade union secretary and living in Deptford.
A member of Deptford Borough Council and served as Mayor of Deptford in 1932-33.
He represented Deptford on the London County Council from 1919-22 and from 1925 until his death.
Buried in Grove Park Cemetery. A photograph is shown here.[1]
Wikipedia page [2].
For the biologist see here.