that means UK is aware of their criminal activities and yet they are keeping these criminals in thier country
The reason is that if even NS have properties in USA, Uganda or Nigeria, they will protect him because for them its good for their banks and also economics as its a v.huge chunk of foreign investment.
They will never say them to go out
For e.g.
Take case of Altaf Hussain
He was using the bank account of MQM in London where public was putting money to his account via bhatta aur gunda gardi.
Now that account is depleted and he start using his own personal account (where he did made some money via any business, property etc)
Still that 2nd account have good tons of money and UK authority will not say a word to deport him.
Yes, as soon as he will apply and ask for welfare fund, then they will kick his ass out.