John Vine, the Chief Inspector of Borders and Immigration said the Government's "e-borders" scheme had failed to fulfil the overwhelming majority of its intended remit, despite costing the public a billion pounds over ten years.
Outlining the catalogue of failures revealed in his report into the NBTC he said the project needs "fundamentally revised" as its achievement has been "pretty underwhelming."
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The man, who was in his 30s, has not been identified, while several other people are believed to have suffered serious injuries.
The Olympian was one of several sports stars who opened up to the prince during an event for his mental health charity Heads Together.
There will be sunny spells, with temperatures peaking at 23 Celsius (73F). However, Northern Ireland will experience frequent showers.