Javarn Carter-Fraser and his ex had been on the verge of getting back together
The 22-year-old family member was charged with murder and torture.
Dwain Northend, 42, launched the vicious attack on his sibling at their mum's home
It comes after his request for police protection was rejected days before the family is due to arrive.
The royal residence the pair will use has not been made public, but they will also be staying in private accommodation during the trip.
The little girl was visiting family in Southend when a tree collapsed on her and several other children
Total spending on journeys across the 12-month period was £3,316,024