You can't use a boat from Heathrow. It's an AIRport.
10 hours
736miles
By Air - 7,228 Miles / 6,805 KM (London Heathrow - Nairobi. By road (& ferry-Spain to Morroco) about 7250 Miles.
8hr 30min to 8hr 50min London Heathrow (LHR) to Nairobi (NBO) by a nonstop flight operated by British Airways, Kenya Airways or Virgin Atlantic.
A flight from France to Nairobi would take about 8 hours.
heathrow to luxor takes 3 hours
flight time from heathrow to Singapore
4hr 45min Nairobi (NBO) to Lilongwe (LLW) by Kenya Airways (1 stop).
There are many hotels near Heathrow that offer long term parking. Some examples to consider are: the Sheraton Heathrow Hotel, the Holiday Inn London- Heathrow, and the Radisson Blu Edwardian Hotel.
9 hours
30 minutes
its 6 hours