Great - thanks for these ideas. Yes if we can do a quick change that will give them what they need and then put the rest of the UK£2,200 into the API pot that makes sense. Ideally, for the quick fix they will need something that doesn’t require them to do Data > Remove Duplicates in Excel but maybe they could just use the ‘Customers’ report for now. I will do some experimenting with them and see if they can make do with what is there.
Thanks again for the suggestions