The Summertime Ball 2025 Lineup. The launch of capital’s summertime ball with barclaycard 2022 continues tomorrow on capital breakfast with roman kemp from 7am, when roman, sonny and siân will reveal the second set of artists joining the star. 248 users have been to shows of this festival.

Lineup news, event info, tickets and more. Plus, discover how you can watch the show from premium seats!