The view from the top of business. Presented by Evan Davis, The Bottom Line cuts through confusion, statistics and spin to present a clearer view of the business world, through discussion with people running leading and emerging companies.

Evan and his guests discuss McDonald's. After a rocky period in the middle of the last decade, how well has the global burger chain managed to revive its famous fast-food formula? They also debate whether the progress of radical new technology has slowed down.

Evan is joined in the studio by Greg Lucier, chief executive of US biotechnology company Life Technologies; Rita Clifton, chairman of branding consultancy Interbrand; Jill McDonald, chief executive of McDonald's UK.

Producer: Ben Crighton.