That was Bruce Bursford’s bike. He was a complete fraud, he claimed ludicrous records like pedalling the bike on rollers on board an aircraft and claiming 560mph + whatever he was doing on the bike. The aero bit was just for show as the bike never actually went anywhere.
His roller records were bullshit too, the bike was clamped front and rear so he wasn’t actually balancing. Also, the rear wheel barely touched the roller and the speed was taken from the rear wheel rpm via a sensor. Friction was almost non-existent and speed was dependent on what gear he had on at the time. He was on Record Breakers and he got up to 100+ in seconds, it was nonsense. If he’d had a 400t chainring he could have registered 700 mph or whatever. I once challenged him to a speed trial, him on his bike and me on my streamlined recumbent bike. He never accepted. He was killed training on the A12 not long after. Sad, but he was a dick.