 The transfer brought fourth-rail electrification to replace steam and construction of a deep-level line connecting Leytonstone on the Ongar branch with Newbury Park on the loop, together with severing connections between Newbury Park and Ilford and Seven Kings.First to go was the westward curve between Newbury Park Junction and Ilford Carriage Sidings Junction, on 30 November 1947.The other connection to Seven Kings West Junction was goods only and survived until 19 March 1956.