You may well be right there....You are right. Doesn't make any sense.
Maybe folie a deux?
I was also thinking about the fact that they paid the Bolton taxi driver CASH for driving them to (1) Liverpool (with ferry connections to the Isle of Man and Ireland), but then apparently changed their mind and had the taxi driver take them all the way from Liverpool to the Port of Harwich in Essex in the south-east of England! That must have been an incredibly expensive journey, and they obviously preferred to pay by cash rather than by card.
Interestingly,no passports are required to travel on the ferries from Liverpool to the Isle of Man or Ireland.
However,if you want to travel by the Harwich to Hook of Holland (Netherlands) ferry you certainly need to show your passports before travelling!
If the couple for some reason wanted to leave "mainland" UK they should have done so by one of the departing Liverpool ferries for Ireland or the Isle of Man with no passport requirements!
So why didn´t they choose this option as the obvious one??? Nothing makes any sense here...