 Dowding later wrote a memo considering several aircraft for the role , rejecting the Boulton Paul Defiant two @-@ seat fighter due to its cramped rear turret area . He was sure the Bristol Beaufighter would be perfect for the role , but it would not be ready for some time . So he selected the Bristol Blenheim light bomber for the immediate term , sending two of the early prototypes to Martlesham Heath to be fitted with the radar from the Battles . Blenheim K7033 was fitted with the radar , while K7034 acted as the target . Both of these aircraft lost a propeller in flight but landed safely ; K7033s propeller was never found , but K7034 's was returned to Martlesham the next day by an irate farmer . 
