In 1930 he moved to Warsaw where he married, had two sons and rose to the role of government inspector of pharmacies.
[5] During World War II, he escaped from Poland and sought refuge first in France and after its fall in 1940, in the United Kingdom.
After the war in London he set up a small network of pharmacies in Earl's Court and Chelsea and started one of the first mail order chemists in England.
The gallery specialised in promoting young and diaspora artists, among whom were Pauline Boty, David Hockney and Bridget Riley.
His other son, Wojciech, also a pharmacist, took over the family business after Grabowski died in London in 1976.
Grabowski's granddaughter, Mareva Grabowski-Mitsotakis, is married to the Greek prime minister (since July 2019), Kyriakos Mitsotakis.