1) be a non-dom and have your foreign income not remitted in the UK. As long as it's a passive income and you file for remittance basis - you will pay 0 taxes on this money
2) transfer the ownership of assets to a trusted third party - that can be a professional trust, a corporation managed by real people in low/zero tax jurisdiction or even a trusted person/family member who lives in let's say Cayman and manages your funds. Again - as long as the management is done overseas and there is no remittance - you will be fine.
One potential workaround - gifts are not taxed in the UK.
2) transfer the ownership of assets to a trusted third party - that can be a professional trust, a corporation managed by real people in low/zero tax jurisdiction or even a trusted person/family member who lives in let's say Cayman and manages your funds. Again - as long as the management is done overseas and there is no remittance - you will be fine.
One potential workaround - gifts are not taxed in the UK.