Critics say government hiding true cost of deal ‘despite being forced to admit financial burden will grow year on year’

Ministers are under growing pressure to end the “secrecy” around the UK’s deal with the US over the cost of medicines, which critics claim is “a Trump shakedown of the NHS”.

MPs from Labour and several opposition parties want the government to publish its impact assessment of the agreement it reached last month with Donald Trump’s administration.

Under the deal the UK will pay more for new medicines and let the NHS spend more on life-extending medicines in return for British pharmaceutical exports to the US avoiding tariffs.

The deal has prompted concern among health experts that it could cost the UK government and the NHS billions extra a year to fulfil those pledges by the end of the deal in 2035.