Chestnut
I'm going to stick my head above the parapet and say I think he should be able to pay for Police protection whilst here in the UK.
Whatever we think of him, he and his children are direct blood line to the Queen and if they had stayed here would have had Police protection round the clock. They are only going to be here for a few days, would it really be too much to provide that protection for such a short time? They won't be here for weeks or months. And it won't come free.
Think he means his own personal protection, if from US will it mean they will be allowed guns. If that’s what he wants, then definitely a no from me. If he had behaved reasonably, along with his wife , as has his brother, there would not have been this problem. Will they be expecting a pomp welcome from a country they so obviously despise.