Four of the firm’s bills are now being assessed by the court. The court has already ruled in the firm's favour on seven other bills.
In 2011, The Daily Telegraph reported that Lady Shackleton, who is Britain’s most prominent divorce lawyer, had increased the bills of celebrity clients beyond the time that she recorded having spent on their cases.
Madonna and Sir Paul appeared to have been charged hundreds of thousands of pounds more than the hourly rate would have demanded, documents showed, a practice known as “marking up”.
A spokesman for Payne Hicks Beach said at the time that all the clients had confirmed that they were happy with their bills.
A spokesman for the firm says Whealon was never one of the peer’s clients. Of her claims, that its hourly rate “was agreed in advance”, he says: “She is wrong that the bills were calculated on the basis of £600 per hour.”
Edited by Richard Eden