Rural affairs ministers from Scotland and Northern Ireland write to the UK Government expressing their concerns.
International trade secretary Liz Truss hopes to start talks over a free trade agreement with India in the autumn.
Planned free trade agreement has been described as potentially ‘devastating’ by union NFU Scotland.
The Prime Minister has insisted the two sides are 'not that far apart' as Brexit talks are set to intensify.
The UK's chief negotiator David Frost says both sides remain deadlocked on issues like fishing rights.
MSPs were told by the UK Government medicine pricing would not be part of post-Brexit negotiations.