The engaged couple have planned a trip away from filming their respective movie projects to Windermere with their children, reports The Mirror.
They will be joined by Maddox, 11, Pax, 8, Zahara, 7, Shiloh, 6, and 4-year-old twins Vivienne and Knox on the trip.
A source close to the pair said: "Angelina has to remain close to the UK because of her filming schedule for Maleficent.
"Originally, the film was supposed to be shooting close to the Lakes, but relocated to a more convenient spot close to Pinewood studios.
"They'd already booked a few days off though, and they didn't want the kids to miss out on their trip up to the Lakes, so they decided to go anyway.
"Brad has rented out an entire boathouse, and the couple have been looking up some local restaurants to dine at whilst there."
The Hollywood couple have been rumoured to be getting married throughout August, since confirming their engagement in April.
Pitt has reportedly handpicked a selection of classic wines for their upcoming wedding.