When we said goodbye to young Ra’Nell at the end of Top Boy’s second season, the concern for his future was twofold: first, would this good-natured kid overcome the disadvantages of a dicey upbringing on the Summerhouse estate? And second, would Malcolm Kamulete, the talented actor who played him, ever get another role as good, in a British TV industry that habitually overlooks and undervalues Black talent? I am pleased to report that on the second count at least, all is well. A now grown Kamulete shines again as British rap star Bosco Champion in this confidently executed and consistently entertaining new musical drama by Candice Carty-Williams, author of the 2019 British publishing sensation Queenie. As the series opens, it seems Bosco’s struggles are behind him. He’s fresh out of prison (trumped-up charges, M’lud), performing his hits to adoring crowds and celebrating his 25th birthday with a back yard barbecue for family and friends. But Bosco’s success casts a long shadow and it’s there that his sister Vita (relative newcomer Déja J Bowens) is languishing. …