Percival James Robinson (P J) was appointed to his position in 1928 on the death of Mr. Harold Dickinson.
In addition to being responsible for the Electrical Supply Department which covers an area of over 100 sq.miles
he carried out the design of the Clarence Dock Power Station. From IET obituaries- ROBINSON, Percival James, CBE, MEng 1879 - 1944 JIEE Vol.92 Pt.I 1945
Thanks to Bill Tubey for photos.
see also 29 October 1940 document