He was articled to a solicitor in the Staffordshire Potteries, qualifying as solicitor himself in 1893. For a time he was managing clerk at a practice in Birmingham and another in Coventry which he later took over. He also concurrently served as clerk to the magistrates of Coleshill Petty Sessions.[2]
He continued his law studies for the bar, and became a barrister of the Inner Temple in 1904,[3] passing his Bar final exams with first-class honours and coming first in his class in criminal law. He practiced on the Midland judicial circuit until well after taking Silk in 1920 and moving to London.[2]
He was one of the first K.C.s to appear without fee under the Poor Persons Rules. In one case he successfully represented a poor widow in three trials against different judges, becoming praised by one, Mr Justice Horridge, as having "sacrificed himself most nobly", while another, Mr Justice McCardie, declared: "The Bar of England is the stronger for his example."[2]
After leaving Parliament, Maddocks served as Recorder of the borough of Stamford from 1924 to 1925, then was Recorder of the City of Birmingham from 1925 until his death. He became a Bencher of the Inner Temple in 1928.[4]
In the years following World War I, in which one of his sons was killed, Maddocks had a reputation as an advocate for disabled ex-servicemen, and was an early member of the Imperial War Graves Commission. He once proposed that convicted criminals who were subsequently killed while serving in the armed forces should have their conviction records erased.[2]
Maddocks married in 1895, Elsie Mary, daughter of John Anslow of Coventry, by whom he had six sons. Captain Henry Hollingdrake Maddocks was awarded the Military Cross and Lt. John Anslow Maddocks was killed in the First World War. one of which William Michael Maddocks went on to become High Sheriff of Warwickshire for 1963. Maddocks, whose last home was at "Wytheford", Sandy Lodge, Northwood, Middlesex,[3] died in June 1931 aged 60 and was buried in nearby Pinner Cemetery.[7]
^ abcdefg"Death of Sir Henry Maddocks, K.C. Distinguished Old Wemian. Brilliant Forensic Career". Shrewsbury Chronicle. 12 June 1931. p. 6.
^ abKelly's Handbook to the Titled, Landed and Official Classes, 1930. Kelly's. p. 1151.
^Who Was Who, 1929-1940. A and C Black. 1947. p. 889.
^ abCraig, F. W. S. (1983) [1969]. British parliamentary election results 1918–1949 (3rd ed.). Chichester: Parliamentary Research Services. p. 488. ISBN0-900178-06-X.
^Shrewsbury Chronicle, 12 June 1931. At time of publication of Maddocks' obituary, Willison was prospective Liberal candidate for Shrewsbury.
^"Funeral of Sir Henry Maddocks". Shrewsbury Chronicle. 19 June 1931. p. 11.