researching Crampton/MacGregor

[iaf1966]

I am researching the above company a ladies blouse manufacturer 1914--1955.My grandfather was John Muir MacGregor (d 1932). Family info is somewhat sketchy.I would like to find any descendants of Crampton (no first name), photos etc. The info I have is the company was at the Barbican prior to 1940 then at 40,Clerkenwell Green as well as having a connection to Peckham on Hanover Street (now Highshore Rd ). Any help much appreciated.