After the war Baker became a publisher with financial backing from his father; the company he founded, Falcon Press, was named after the armoured car which Baker had used during the war. As wartime paper rationing was continuing and Falcon Press was a newcomer without a large quota, he printed books in several foreign countries instead. The business was initially successful, enabling Baker to build up a "minor business empire" including four publishing companies, printing works, a wine merchants and a whisky distillery, aircraft research company, and a property business.  Muriel Spark worked for Falcon Press from 1951.  When Falcon Press ran into debt, Baker and Robert Maxwell (then making his name as a leading British publisher) planned to merge their respective publishing businesses; however the plans fell through.  Maxwell eventually bought the British Book Centre in New York from Baker in 1952.