When Reena and Wes bought their three-bed terrace in Borehamwood 12 years ago, it was the perfect fit in a great area. But with the arrival of their daughter, Nylah, the house they once loved has become a problem. With Wes often working from home, Nyla's toys are competing for space with the desk, and the house feels cramped. The kitchen doesn't have space for a table, so they eat all their meals on their knees in the living room. With family in both Barbados and the UK, Reena and Wes are desperate to create some space to get everyone together. Taking on the challenge of redesigning this house are top architects Will Foster and Lizzie Fraher. Will Reena and Wes opt for Lizzie's light-filled dining area or Will's fish tank wall?