Pfizer and AstraZeneca quizzed by MPs
13 May 2014 Last updated at 09:30 BST
The Business, Innovation and Skills committee holds a session on the proposed takeover of AstraZeneca by the American firm, Pfizer.
Pfizer has made a five-year commitment to research and guaranteed jobs in the north-west of England.
But the president of the Royal Society, Professor Sir Paul Nurse, has dismissed the pledge as "vague" and insufficient.