It now appears that the support for the self-employed through the SEISS is to be enhanced for the month of November at least. Originally the grant would have amounted to 40% of average profits for the 3 month period to end January. Now it will be 80% of profits for November and 40% for the remaining 2 months. It will also be paid earlier, probably around the start of December.
I am slightly concerned about the Treasury's sums. A spokesperson said that this revised support resulted in a grant of 55% for the 3 months - I actually make it between 53% and 54% but who's counting? The maximum grant will be just over £5,000.