The Sussexes are days away from a stunning return to Britain after six years in the US, but the motivation behind their sudden change of heart remains unclear.

The prince returns home as the prodigal son, but not a prodigy. Experience in the United States shows that, in the long run, speaking ill of the royal family does not pay off

It's been six years since Prince Harry and wife Meghan caused a royal stir and ditched the UK in favour of California - but they could be about to make their return.Reports from…