I've probably left it too late to ask the question seeing as he's arriving to do the job tomorrow (!) When he came to quote (weeks ago), he said it would it could take up to 3 days to complete, but 2 minimum (planks are being glued down, not floated). However, yesterday he confirmed he should be able to knock it all out in a single day.
Not sure it makes much of a difference if he takes one day or two, but I guess for me, £600 over two days seemed a reasonable day rate but £600 for a day seems excessive, if the job can be done in 8 hours... Am I over-thinking this or is £600 the going rate for SE London?