It's interesting to read an authoritative explanation of who's who in the zoo:
2. On 26 June 2020, the Administrators executed a binding Implementation and Sale Deed (‘Sale Deed’), in which the business and assets of the Virgin Companies were sold to BC Hart Aggregator, L.P. and BC Hart Aggregator (Australia) Pty Ltd (the ‘Purchasers’), which are subsidiaries of Bain Capital Private Equity LP, Bain Capital Credit LP and their related entities (‘Bain Capital’).