Margaret Hodge, the chair of the Public Accounts Committee, told ITV News: "I understand why they are tempted to go down this route but they are wrong. They should not be engaging in aggressive tax avoidance.
"I have to say the people who benefit from this are the accountants who have set up this system and they are taking money out of the NHS, out of direct services...and pocketing it and that is tax payers' money."
Laura Kuenssberg: NHS Trusts in England accused of avoiding tax
More top news
The Democratic presidential candidate may also have shown his cards on his choice of running mate.
The US president also shared a post on Twitter accusing Dr Anthony Fauci of misleading the public over hydroxychloroquine.
Fears over an impending second wave of coronavirus dominates Wednesday’s front pages.