As the first day of the Emir of Qatar’s state visit to Britain draws to a close, all those involved in this its organisation might allow themselves a larger-than-usual measure of Christmas cheer. From Sheikh Tamim bin Hamad bin Khalifa Al Thani’s arrival in the country earlier today, the lavish pageantry of his welcome by the King, Prince and Princess of Wales and Keir Starmer, amongst many other dignitaries, has been precision-designed to make sure that the Emir has as enjoyable and eventful a visit to the country as possible.