My father worked here up to 1976- At HB Sale in Aston Brook St. do you know when the building was demolished ?But there was also a (presumably ) associated firm
Sale H. B. (Moulds) Itd. 'injection, compression & transfer moulds. Unit 11A , Wincaster Factory Estate, Aston Brook st 6. 021-359 4022. This was still going in 1973, but the Summer lane factory seems to have disappeared around 1971