The authorities will attempt to confiscate his assets, especially the houses in Wales.
True, but if he has half a brain, he'll have salted a lot away.
I know someone who has been convicted of tax fraud amounting to over £6 million. He's got a sentence of 7 years, is in an open prison and expects to be released in 3 years, with weekend home visits after 1 year.
The tax man hasn't been able to confiscate anything despite his best efforts, it's all been tucked away by his solicitor.