Majority (particularly by ticket sales) of uk train operators (TOCs) are foreign owned[1] and operators are "TBTF" and subsidised by the government, in 2023 this was over 4 Billion pounds, meanwhile each TOC is paying out millions in dividends to share holders[2].
That said the current government have introduced legislation to bring these TOCs into public ownership as franchises expire [0]. Rolling stock and freight will remain privately owned so it isn’t quite a return to the days of British Rail, but the privatisation experiment is coming to a close.
[0] https://bills.parliament.uk/bills/3732