These things in the UK are generally simultaneously massively serious in terms of arbitrary rules and also massively not.
I suspect there are handful of entrants each year, a few obsessives and 'people around at the time it happens to be on. Hence this guy who has been around long enough he gets asked to help out.
UK law generally is based on previous screw-ups.
Doubtless next year they will add a rule, but in general abusing such power would fall under the general "good sportsmanship" rule and be dealt with far more seriously than just 'banned from a tiny competition with a grand sounding name'.