The BBC can confirm that Mr Majeed, the man at the centre of the fixing allegations, and two others were arrested on Sunday as part of what HM Revenue and Customs said was an "ongoing investigation into money laundering". The others arrested were a woman from the Croydon area and a 49-year-old man. They have been questioned and given bail.
The arrests came after Mr Majeed had been bailed and released by Scotland Yard detectives on suspicion of conspiracy to defraud bookmakers.
It is understood the HMRC investigation into Mr Majeed was active before the News of the World story making the fixing allegations was published and that it is a highly complex inquiry.
Money laundering investigations will often involve lengthy periods of surveillance to gather evidence before arrest.
Pakistan's team manager Yawar Saeed: "No allegations are true until they are proved"
The ICC has already said the tour will continue and England all-rounder Stuart Broad agreed the series should go ahead.
"We shouldn't call it off on the back of an investigation that is ongoing," said Broad, who scored 169 in England's win in the fourth Test at Lord's.
"It is up to others to decide if any of the Pakistan players involved in those allegations should miss those games."
"I never dreamt there was anything untoward about our victories," added the Nottinghamshire player, whose record-breaking knock helped seal an innings win and a 3-1 victory in the series.
"I have absolutely no doubts that Pakistan were giving everything to try to win that match.
"When Pakistan did not come out to practise on the fourth day, it did cross our minds that we might have another forfeited Test on our hands.
"When we shook hands with their players afterwards - and there was never any suggestion that we weren't going to do that - we just said the normal things even though it seemed wrong somehow to celebrate as strongly as we would normally do."
Spinner Graeme Swann said he had no qualms about the two Twenty20 matches and five one-day internationals going ahead.
"I love one-day cricket and, with nothing proved, I have no problem whatsoever who I play against," Swann, who took 22 wickets in the Test series against Pakistan,
wrote in The Sun.
"What I want most is that cricket gets back in the papers for the right reasons - for someone to score an unbelievable hundred or produce a great spell of bowling.
"It's terrible for cricket to have something like this hanging over it. We want a clean game and that's what the spectators deserve."
However, former England captain Michael Vaughan questioned whether the final leg of the tour should proceed.
"It's difficult to focus on the series," he said. "Everybody will be looking back and asking questions.
"If I'd been playing and I'd got a hundred, or somebody like Graeme Swann who took so many wickets, you're bound to ask questions - are they legitimate runs or wickets?
"It's very difficult for the one-day series, everybody will be studying every aspect, any no-balls or wides or somebody getting out in a particular fashion."
And current England captain Andrew Strauss said it was up to cricket's administrators to decide whether the series should proceed or not.
"That is something for the ICC (International Cricket Council), ECB (England and Wales Cricket Broad) and PCB (Pakistan Cricket Board) to sit down and decide what the best way forward is," he stated.
"Clearly there are going to be some very strong reasons for the series to go ahead, but they are also going to have to sit down and think about what is the right thing to do. That's their decision."
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