Numerous reports over many years that they don't have many real customers and exist mainly to enable a tax scam / money laundering.
Links for the disbelieving
2022 https://www.bbc.co.uk/news/uk-england-london-61777445
2025 https://www.cityam.com/how-money-laundering-took-over-our-hi...
Links for the disbelieving
2022 https://www.bbc.co.uk/news/uk-england-london-61777445
2025 https://www.cityam.com/how-money-laundering-took-over-our-hi...