Review of an interesting-sounding newly published authorised biography of Wilfrid Brambell:

https://www.dailymail.co.uk/news/article-11087835/Steptoe-Son-star-Wilfrid-Brambells-heartbreaking-personal-life-laid-bare-new-biography.html

Currently available at Amazon for £13.50 (published price £20):

https://www.amazon.co.uk/dp/0750996706/comedyguide-21