By David Bamford
BBC News Africa analyst
Exiled former Kenyan anti-corruption investigator John Githongo says he is reassured, after a meeting with Kenyan MPs who travelled to hear his claims.
Mr Githongo says ministers have blocked his investigations
The committee of MPs came to London to listen to his allegations that Kenyan ministers colluded in a $600m corruption scam.
He has implicated several government ministers by name.
One of the delegation, Uhuru Kenyatta, said they would be taking back to Kenya what Mr Githongo had told them.
Mr Githongo gave two days of testimony, over what has become known as the Anglo Leasing affair, to members of the Kenyan parliament's Public Accounts Committee.
"I think it's gone extremely well," he said following the meeting, held at the Kenyan High Commission in London.
He described the committee as "very productive, very cooperative", adding "so I'm very happy".
He said he would leave it to the committee to decide what happens next.
Mr Kenyatta said that it was important to take full advantage of the evidence they have been given and hold senior politicians accountable.
"I think for the first time in Kenya's history, the evidence that we've been able to adduce from John Githongo, does actually bring about political culpability; you can actually begin to pinpoint political culpability," he said.
The scandal may undermine President Kibaki's administration
"And I think this time it will be very difficult for the politicians to brush this one off on the bureaucrats as they normally do."
As well as being chairman of the Public Accounts Committee, Mr Kenyatta is also the country's opposition leader.
There is little doubt that he is seeking political advantage over this affair for his Kanu party, which after 40 years in power was beaten by President Mwai Kibaki in 2002 who ran on an anti-corruption platform.
But with the Kibaki government now accused of being every bit as corrupt as its predecessor, the pressure will be on - if Mr Githongo's full evidence is made public - for a sea change in the way Kenyan governments go about their business.