RICHARD Keen resigned as the Advocate General for Scotland today, after calls for him to go grew over the last week.

Here is Baron Keen of Elie's brief letter of resignation, sent to the Prime Minister, in full:

“Dear Prime Minister,

"It has been a privilege to serve in your Government as Advocate General for Scotland and to serve your two predecessors in the same office.

READ MORE: Lord Keen resigns as Advocate General over Internal Market Bill concerns

"Over the past week I have found it increasingly difficult to reconcile what I consider to be my obligations as a Law Officer with your policy intentions with respect to the UKIM [United Kingdom Internal Market] Bill. I have endeavoured to identify a respectable argument for the provisions at clauses 42 to 45 of the Bill but it is now clear that this will not meet your policy intentions.

"In these circumstances I consider that it is my duty to tender my resignation from your Government.

"Your Government faces challenges on a number of fronts and I fear that the UKIM Bill in its present form will not make these any easier.

"I wish you well in dealing with these issues.”