PST conversion rate = 40% to date and they hit £1m all in. Confirmed by PST spokesman
A bit of Nutjob maths later confirms they therefore have:
2174 Total Pledges
870 Converted Pledges
1304 Un-Converted Pledges
Based on that amount of pledges, they would have to convert at 83% to get the 1800 converted pledges, over double what they currently have.
All the best with that! Can't think why they have been hiding this!