Frank Warren Promotions Accounts

Mildly interesting article on WBN about Warren's Queensberry promotions' tax return Won't let me link to it but first hit on google for warren hearn turnover. Seems to show that for the whole company the turnover was £18.9m in a year. Surely BT sport pay a few million for the fights. International TV companies will pay a few million for fights. Ticket sales to events over 12 months will be a few million. How is this turnover so low? No wonder big names don't stick with Warren. How long will DDD last?