 It took largely the same format as the fourth series with two different groups of people.However, the groups were made up of high-earning people (with an average salary of more than £100,000) and low-earning people (each with a salary lower than the UK national average).On 1 May 2018, it was confirmed at the end of the fifth series that "The Island" would return for a sixth series, set to air on 8 September 2019.