Coverage also in the Telegraph:
https://www.telegraph.co.uk/business...kpot-decision/
British Airways has cut back on its lunch service for business and first-class passengers in a cost-cutting move branded “crackpot” by industry watchers. The airline has begun swapping lunch on some of its flights for a smaller brunch – even though it may be served well into the afternoon. The new menu has been introduced on all long-haul flights departing between 8.30am and 11.29am. Flyers in Club World – BA’s business-class cabin – are served a “Great British Brunch” offering a choice of starters such as a fruit plate, smoked salmon, goat’s cheese and grilled artichoke or cheese and crackers.

At the same time, British Airways has sharply cut back its evening meal service on flights departing after 9pm. While Club World passengers were previously offered a three-course meal, they will instead have to settle for a main course and dessert. BA has said the “one-tray” meal service will allow passengers on late-night flights to get to sleep more quickly. However, the airline already offered this quicker option for people who did not want the standard full menu.
There are also some quotes from Head for Points in the article.