On 31 October 1948, the Post Master General (who was also the Director of Broadcasting) appointed the young announcer as an Assistant Controller of Programmes.

Noel Cruz writing in the 'Island' newspaper observed: 'The Broadcasting station that had moved from Cotta Road to Torrington Square needed drive and Wijemanne provided it.

The BBC chose Wijemanne to occupy a seat assigned to a Commonwealth broadcasters at the Coronation of Queen Elizabeth on 2 June 1953 at Westminster Abbey.

Wijemanne was invited by the British Council to reply to the toast of the Commonwealth proposed by the Chancellor of the Exchequer Mr Richard Mauldling at the Coronation Civic dinner at North Garnet.

Wijemanne worked very closely with the Australian administrator, Clifford Dodd who came to Radio Ceylon under the Colombo Plan.