The UK government would never bring RYR to task over alleged tax irregularities as they are far to large an employer both here and in Europe.
RYR are not a large employer of UK staff. Anyway, where will they go? Africa? Russia? RYR employ very few people in Britain. They have lots of subcontractors, people with off-shore contracts, self-employed etc. But if RYR left the UK tomorrow, they'd still have to operate here but to be competitive, either get into the UK very early (and suffer FTL penalties) and night-stop their crew. Err....
PM