Labour has said that the lobbying scandal surrounding David Cameron demonstrates sleaze in the Tory party is “back and ... bigger than ever”.
A series of probes have been commissioned, including by Downing Street, as Westminster looks to understand the role Mr Cameron played in securing Whitehall access for Greensill.
But the environment secretary, George Eustice, said that while there might be “tweaks” required following the review into Greensill, he argued the system is already “pretty good”.
Boris Johnson has been warned he risks losing his election gains against Labour if he does not clean up the “shameful” Westminster lobbying controversy.
Sir Bernard Jenkin, chair of the Commons Liaison Committee, urged the prime minister to get a grip on the lobbying system, arguing failure to be “more transparent” than previous administrations could risk the so-called “red wall” seats.