Inside the RAF’s most mocked fighter aircraft

How ‘ridiculed’ WWII RAF fighter plane the Defiant was far deadlier than it was ever given credit for, says historian in new book

  • The Boulton Paul Defiant was a fighter aircraft carrying a pilot and a rear gunner
  • The Air Ministry commissioned the aircraft in the late 1930s to target bombers
  • In one day, 264 Squadron claimed 38 kills which was a record for the RAF
  • The rear machine gun position dramatically reduced the aircraft’s top speed  

 A World War II aircraft which was sent to a museum in 1944 was far deadlier than its reputation suggests, according to a historian. 

The Boulton Paul Defiant had a Rolls Royce Merlin engine – just like the acclaimed Spitfire and Hurricane – but it also had a second seat with a machine gun turret for blasting enemy bombers out of the sky. 

When it was first introduced into service, Luftwaffe pilots initially mistook the aircraft for a Hurricane and would attempt to roll in behind the aircraft to shoot it down only to be faced by its deadly Browning .303 machine guns. 

The Boulton Paul Defiant had a Rolls Royce Merlin engine – just like the acclaimed Spitfire and Hurricane – but it also had a second seat with a machine gun turret for blasting enemy bombers out of the sky

Unlike the majority of Spitfires and Hurricanes, the Defiant had a crew of two people

Unlike the majority of Spitfires and Hurricanes, the Defiant had a crew of two people

The Boulton Paul Defiant was a surprisingly effective fighter, though the Luftwaffe quickly changed their tactics to counter the threat

The Boulton Paul Defiant was a surprisingly effective fighter, though the Luftwaffe quickly changed their tactics to counter the threat

Though, the additional weight and aerodynamic drag caused by they turret  meant that the aircraft was an easy target and could not be used in daylight hours.

The Air Ministry commissioned the Boulton Paul Defiant as a defence against bombers. 

The aircraft did not have any machine guns or cannons in the wings as the Air Ministry believed the best method of attack or defence was for the pilot to move the aircraft into a position for his gunner to blast away with his machine guns.

Historian Robert Verkaik has written a book about the aircraft, In In Defiant: The Untold Story of the Battle of Britain. He believes the RAF’s leadership were responsible for the aircraft’s bad reputation for deploying it incorrectly and blocking any attempt to put machine guns in the wings. 

The Defiant holds the record for shooting down the most enemy aircraft in one day when on May 29, 1940, 264 Squadron shot down two Me 109s, 15 Me 110s and a Junkers Ju 87 Stutka dive bomber on their first mission of the day. 

German pilots initially mistook the Defiant for a Hurricane and attempted to shoot it down from the rear

German pilots initially mistook the Defiant for a Hurricane and attempted to shoot it down from the rear

German pilots approaching from the rear were met with four .303 Browning machine guns

German pilots approaching from the rear were met with four .303 Browning machine guns

During the Battle of Britain, the squadron lost 11 aircraft and 13 crew while claiming 19 kills which led to it being repurposed as a night fighter

During the Battle of Britain, the squadron lost 11 aircraft and 13 crew while claiming 19 kills which led to it being repurposed as a night fighter

The air gunner on the right was responsible for eight enemy kills in one day

The air gunner on the right was responsible for eight enemy kills in one day

After refuelling and rearming, the squadron finished the day with a total of 38 aircraft kills. 

Although, one of the squadron’s aces – having killed five aircraft in one day – was later shot down and killed. 

Pilot Nicholas Cooke and his gunner Albert Lippett scored five kills in one day, making them instant Aces. 

However, they were shot down and killed two days later over Dunkirk. 

 According to Mr Verkaik: ‘There is little doubt that the two patrols involving the Defiants, which met the full force of the Luftwaffe attacks, blunted the enemy’s strikes against the Royal Navy ships which had been targeted by more than 300 enemy aircraft. That day the Navy lost just two ships [minesweepers] while evacuating nearly 68,000 men from the Dunkirk beaches — the greatest number in a single day during Operation Dynamo.’

Though, during the Battle of Britain, the squadron lost 11 aircraft and 13 crew while claiming 19 kills. 

The aircraft type was later repurposed as a night fighter.  

As a night fighter, the Boulton Paul Defiant claimed more than 100 German aircraft

As a night fighter, the Boulton Paul Defiant claimed more than 100 German aircraft

Boulton Paul Defiant versus the Supermarine Spitfire  
SUPERMARINE SPITFIRE BOULTON PAUL DEFIANT  
ENGINE 1030hp Rolls-Royce Merlin engine 1,030hp Rolls-Royce Merlin engine
SPAN 36ft 11 35ft 4
LENGTH 29ft 11 35ft 4
TOP SPEED 362mph 304mph 
ARMAMENT Eight – .303 Browning machine guns Four .303 Browning machine guns