A Russian-born gaming mogul has been named the UK’s richest person under 40 — in a ranking dominated by tech entrepreneurs. Dmitry Bukhman, 39, built his fortune after founding mobile gaming giant Playrix. His estimated wealth of £12.54bn tops The Sunday Times 40 Under 40 Rich List — and makes up over a third of its £36.2bn combined total. His net worth has nearly doubled since last year. [...]