so on the ground, in practical terms, in terms of how many americans travel to the uk, this may mean that many more do, but in terms of how the government here feels about travel, i think that level four advisory is quite a strong indication. igrgte four advisory is quite a strong indication- indication. we have ust had reaction from i indication. we have just had reaction from british - indication. we have just had l reaction from british airways. indication. we have just had i reaction from british airways. of course the aviation industry is very happy with this decision, they had been calling for removal such as this. british airways have said, our own trials have proved it is quick and easy to check travellers are fully vaccinated and can safely enter the uk, and this step will allow us to reunite loved ones and get global britain back in business, giving the economy is a vital boost it so badly needs. can you just explain to us, for american travellers, all those coming in and o