India, Sept. 10 -- King Charles is set to return to London this week after his annual summer retreat, fuelling speculation of a possible reunion with Prince Harry, who is currently in the UK.

King Charles has been away in Balmoral, Scotland, for the past month. According to a report by The Sun, he will be back in the capital at a time when his younger son is carrying out a string of engagements across the country.

Prince Harry flew in from California for a four-day trip focused on charity work. He has already attended a string of events in London, and he has other events scheduled for this week connected to his charities and patronages.

The Duke of Sussex has not seen his father for more than a year. The last meeting came in February, ...