S/Ldr R. B. Hesselyn was born in Dunedin on 13th March, 1921.
A machinist by trade, he joined the Territorial Army in 1939 and transferred into the RNZAF in November 1940. With flying training completed he was posted to Britain in September 1941. 
 
Raymond's introduction to the Spitfire was made at 61 Operational Training Unit at Heston, from where he went to join 234 Squadron, based in the south of England and flying offensive sweeps across the Channel to France. 
 
In February, 1942, Raymond embarked on the aircraft carrier HMS Eagle, bound for the Mediterranean and Malta. This was the first time that Spitfires had been sent to the embattled island to combat the ever-increasing attacks by German and Italian aircraft. 
 
Raymond flew off the carrier on 7th March, 1942, landed at Ta Kali and joined 249 Squadron. 
 
Over the next three weeks he flew some sorties but his first victory did not come until 1st April, when he destroyed a Ju87 and a Bf109. On the 20th, Raymond and another pilot were on aerodrome defence duty, which entailed their taking off fifteen minutes after the squadron scrambled, flying out to sea and then covering the Spitfires as they returned to base. On this day there were many German aircraft about and after being attacked themselves Raymond and his colleague each shot down a Bf109 and he also damaged a Ju88 bomber. These were followed by Raymond’s destruction of Ju87 and a Bf 109 damaged on 26th April.
A few days later Raymond was awarded the DFM.

During the afternoon of 10th May, Raymond took off with three other Spitfires. At 25,000 feet they sighted a force of Ju 88’s and immediately went down to attack. Before Raymond could line up a victim he was jumped from behind by a Bf109 and his aircraft was struck in several places. He immediately skidded to starboard and his attacker shot past. Raymond fired at point blank range causing pieces to fly off the 109. Being virtually cut in two by the New Zealander’s cannon shells the German fighter broke up. In spite of his own serious damage Raymond landed safely. 
 
On 12th May, Raymond chased a Bf109 across the surface of the sea at a low level and shot it down, circling afterwards to see if the pilot escaped but he did not. Raymond dispatched two more 109’s on the 13th and a Ju 88 bomber the next day, which blew up.
Awarded a Bar to the DFM in mid-May, Raymond was commissioned as a Pilot Officer later in the month. 
 
Enemy air activity decreased in June and his next victim, another Bf109 was destroyed on 8th July. On the same day, during a later patrol, Raymond damaged a Ju88, last seen heading out to sea.

His time in Malta was over and he was posted back to England for duty as an instructor and to pass on his operational knowledge to new pilots. 
 
In early 1943, Raymond joined 501 Squadron, based in Northern Ireland. The squadron moved to Tangmere in April and on 15th May, he destroyed an FW190.
In early July Raymond moved to 222 Squadron and soon was made a flight commander. On 17th August, 222 Squadron escorted Germany-bound American Fortresses as far as Antwerp. On the way home Bf109’s were spotted and in the ensuing action five were destroyed without loss, two being shot down by Raymond.

He was awarded the DFC in September. 
 
On 3rd October, 1943, in one sortie over France, he shot down three Bf 109’s and was then shot down in flames himself. He baled out, wounded in both legs and burned, and was captured. At this time he had destroyed 21 enemy aircraft, shared in the destruction of one other, probably destroyed one and damaged several others. 
 
Raymond escaped once from his prison camp but was recaptured. He continued to make further attempts and after the war, in 1946, he was made an MBE for services whilst a prisoner. He stayed on in the RAF, reaching the rank of Squadron Leader. 
 
Raymond Hesselyn died at RAF Hospital Uxbridge in England on 14th November 1963.
He is buried at the Uxbridge / Hillingdon cemetery.