Where is the friend now?
Did the Friend have a return ticket to the US when he first entered the UK?
Was his intention, initially, to only stay 6 weeks?
Thanks for the clarification.
Generally, Tourist Visas are issued for up to a period of 6 months and the holder is entitled to remain in the UK for a period of up to 6 months.
Problems arise when the person to whom the visa is issued decides to stay longer than they initially proposed. In cases such as this, sometimes, an Immigration Officer (IO) would be of the opinion that the person will breach the terms of their visa if they stay longer than initially proposed.
In your friend's situation, the best thing the friend can do at this stage is to make an application for a new Visitors Visa to the UK Embassy in France. He should state that he was previously refused entry and explain the circumstances in any application form.
It would then be up to the UKBA to make a decision.
If you wish to discuss, please feel free to ask further questions.
There is no guarantee that a visa will be granted, however, it will provide him an opportunity to avoid being returned at the airport and will also allow him to explain his circumstances to an immigration officer at the embassy.
If the application for a visa is refused, at least he will not be refused entry at the port.
This is news to me.
I would suggest he contact the embassy and request an appointment.
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