Widocks moved to Sydney from Perth as a child. From age 12, he contributed illustrations to the Sunbeams children's pages in The Sun (for example, 'Rambler's Notebook', The Sun 13/8/44) and at 14 he drew a strip for the North Sydney Police Boys' Club (Sunday Times 7/7/46).
From the late 1940s until 1955, Widocks contributed a number of one-page humour comics to Meteor and KG Murray publications. He also contributed cartoons to Humour (New Century Press).
In 1949, Widocks completed an introductory art course part time through the Department of Technical Education attaining a 'C' grade (The Daily Telegraph 24/1/50). In 1951, he completed pictorial composition (grade 'B'), illustration (grade 'C') and antique drawing (grade 'A') (The Daily Telegraph 30/1/52) and in 1952, portrait painting (grade 'C') (The Daily Telegraph 28/1/53)
Widocks worked as a commercial artist and advertising/marketing consultant.
In the late fifties, Widocks was Director of Amalgamated Advertising Pty Ltd in Sydney (Federation Insurance Bldg, Ash Street in 1959 and Caltex House, 167 Kent Street in 1960) with T. Wrightson (Director), P. Harris (General Manager) and K. Ferguson (Production Manager, Account Executive). The company's clients included Inglis Electrix, Bush Simpson, British Automotive Industries, A. W. Barrs, Dux Coaching College, Amcos, Lodge Spark Plugs, The Grand United Order of Oddfellows Friendly Society, Cheapa Glass, Derrin Bros, Homeshield, Hunter Douglas (building products) and Retravision. (The Broadcasting and Television Year Book 1959, 1960, 1965).
By 1965 Widocks was sole Director (The Broadcasting and Television Year Book 1965) and the company was wound up in 1966. Widocks was made bankrupt in 1969, finally discharged 23 December 1981.