The gold standard 8-hour design will be used. The appetite probe day will be conducted at the Kissileff Laboratory study centre and will involve participants attending the centre for a fixed breakfast (breakfast is calibrated based on weight bands which will be determined at the Screening session; prior to the end of WLP and prior to the end of the assisted weight maintenance phase to ensure accurate weight banding), the study beverage, ad libitum lunch and ad libitum dinner as well as a take-home snack pack for the remainder of the evening. Participants will complete appetite VAS pre- and post- each meal as well as completing these ratings at hourly intervals throughout the test day. They will be free to leave the Study Centre after consuming their meals and will be provided with water as well as a specified time to return for their next meal.