Promoters of aggressive tax avoidance schemes will be forced to disclose their client lists to inspectors under a new crackdown, the Government will announce today.
Think tank scheme operators will be "named and shamed" for sharp practice, Treasury Minister David Gauke will tell the Policy Exchange.
It follows a wave of revelations about the financial loopholes used by the rich and famous to legally side-step hefty tax bills.
Last month comedian Jimmy Carr admitted to making a "terrible error of judgment" after it emerged he was using a scheme to pay an income tax rate as low as 1%.
More top news
Milder Atlantic air into the north with colder, Continental air into the south.
A report produced for the British government criticised the security at the Riu Imperial Marhaba hotel where 38 people were killed in 2015.
A second Scottish independence referendum is "even more likely" after Theresa May's Brexit speech, Nicola Sturgeon has said.