It is impossible for Brexit to pass at the moment, 91 Conservative MPs are against the Agreement

The pound has been firmer on the similar progress of late, although remains vulnerable considering PM May will now face her biggest challenge when she takes the deal to the UK Parliament where she needs the deal to be approved - And that is where the major risk lies for the pound.

PM May has already delivered a letter to the nation and has said that the agreement delivers Brexit, gives the UK back control over its borders, safeguards the rights of citizens, cuts payments to the EU and sets a bright and secure future for the UK. 

However, the Sunday Telegraph has reported that 91 Conservative MPs are against the Agreement for various reasons which makes it impossible for the deal to pass at the moment.  Should the deal be rejected then the pound will suffer on the basis that a no deal exit would be a more likely income. There is even the possibility of a second referendum, PM May losing her job or temporarily joining the EEA. Upshot: this is far from resolved.