At 2pm on Sunday, a teenage boy walked into Theo's, a cafe next to a park in Uxbridge, grabbed two bottles of Lucozade from the fridge and approached the till.
The incident took place on March 23 at popular eatery Pangs Chinese in Uxbridge, where the family enjoyed a meal before leaving without paying their bill.
Paola Mereu, 39, sold the house her and her husband and their two daughters, aged one and seven, lived in at Uxbridge and were meant to buy their new home in West Sussex on Friday.