The first examples arrived in 1953 , and it was soon fit to the Canberra .
It was originally specified in 1949 as OR. 3015 for the English Electric Canberra bomber .
The first examples arrived in 1953 , and it was soon fit to the English Electric Canberra .
It was originally specified in 1949 as OR. 3015 for the English Electric Canberra bomber .