Greg Clark
Industry needs certainty in "next few days", he tells MPs.
Tory business secretary makes claim as he warns no-deal Brexit would be "ruinous".
Former government whip Alistair Carmichael urges ex-colleagues to quit if necessary.
The PM met Unite boss Len McCluskey in Downing Street on Thursday.
The business secretary said he is not ruling out resigning.
The move comes following public and political uproar over recent pay packets for executives.
Government urged to bring outsourced staff back in-house.
The five things you need to know about politics today
Business Secretary warns about 'continuing uncertainty'.
The five things you need to know about politics today