 Nothing came of the plan, but elements of it made their way into the 1952 Development Plan for the County of Essex which guided Chelmsford's later development.Three years later, Crawley Development Corporation appointed him as consultant planner in place of Thomas Wilfred Sharp after the latter's sudden decision to resign soon after submitting his master plan—"an extraordinary decision [... which was] never completely explained".By June 1947 Minoprio had prepared a new draft plan, and this was approved and published in December 1947.