Another HMRC anecdote.
They turned up at my mates house when he was secretary of our business demanding money with menaces and had bailiffs in tow. Fortunately he was on a project out of the country and is is single, so no family members to harass.
Fortunately our accountant sorted it out and we didn’t owe the money, but it was a very worrying experience.
That said, Wasps were in a different position. They’d accepted they owed the money and had agreed a schedule. The taxman has to make the judgement about the best way to get paid and as someone elsewhere on this forum pointed out, whenever they agree a schedule they also reserve the right to change their mind if they think the debtor will struggle to make their payments.