1 August 2018 - Sanofi and Novartis action follows similar move by AstraZeneca.
Sanofi and Novartis said on Wednesday they planned to increase stockpiles of medicines Britain in preparation for potential disruption if the UK crashes out of the European Union without a deal.
The move follows similar action by AstraZeneca, which said last month it would increase stockpiles of drugs that could be affected by Brexit by around 20%.
Roche, the world's biggest maker of cancer medicines, also said it was taking "appropriate action" to review its stock levels in order to protect supplies to patients.