Complex sentence: After delays occasioned by British immigration restrictions and Hoffman's one-month-long incarceration in a Nazi concentration camp, he together with his wife and daughter reached England in March 1939 to begin work at Vauxhall.
Split into simpler sentences: After delays occasioned by British immigration restrictions and Hoffman's one month long incarceration in a Nazi concentration camp. He together with his wife and daughter reached England in March 1939 to begin work at Vauxhall.