April 22-June 27, 2001: Some Hijackers Transit London on Way to US, One or More Apparently on British Watch List

Some of the “muscle hijackers” transit London when traveling between Dubai, United Arab Emirates, and the US (see April 11-June 28, 2001 and April 23-June 29, 2001):
Satam al Suqami and Waleed Alshehri leave Dubai on April 22, change planes in London, and arrive in Orlando the next day.
Majed Moqed and Ahmed Alghamdi fly from Dubai via London to Washington on May 2.
Hamza Alghamdi, Ahmed Alnami, and Mohand Alshehri pass through London on their way from Dubai to Miami on May 28.
Ahmed Alhaznawi and Wail Alshehri travel from Dubai to Miami via London on June 8.
Fayez Ahmed Banihammad and Saeed Alghamdi transit London en route from Dubai to Orlando on June 27. [US District Court for the Eastern District of Virginia, Alexandria Division, 7/31/2006, pp. 42-50 ]
There are also some reports that some of the hijackers spend more time in Britain (see January-June 2001 and June 2001). Ahmed Alghamdi is later said to have been on a British watch list and the Sunday Herald will say that he should have been “instantly ‘red-flagged’ by British intelligence” as he passed through Britain. Alghamdi was linked by the FBI to Raed Hijazi, an associate of Osama bin Laden in prison in Jordan for plotting a bombing campaign there, so the British may have watchlisted him based on information from the US. Two other hijackers that may have been on the British watch list are Satam al Suqami and Hamza Alghamdi, who were investigated by US customs together with Ahmed Alghamdi. If Ahmed Alghamdi was watchlisted based on US information, the names of the other two hijackers may have been passed to the British along with his name. Al Suqami and Ahmed Alghamdi are connected to both Hijazi and one of his associates, Nabil al-Marabh, and are reported to be under investigation, starting between autumn 2000 and spring 2001, by US customs and the FBI (see September 2000, Spring 2001 and September 11, 2001). A British intelligence source will say: “There is no way that MI5 and MI6 should have missed these guys. Britain has a history of having Islamic extremists in the country. We should have been watching them.” [Sunday Herald (Glasgow), 9/30/2001] Alghamdi appears to have been questioned about bin Laden after arriving in the US from London, but he is not stopped from entering the country (see May 2, 2001). According to The Times, the identities of some of the men are in question: “Officials hope that the inquiries in Britain will disclose the true identities of the suicide team. Some are known to have arrived in Britain using false passports and fake identities that they kept for the hijack. There are serious question marks over the identities of at least four of the visitors to Britain.” [London Times, 9/26/2001]