Gave up trying to manually rake dead (after treatment) and live moss from my lawn and this evening purchased a lawn scarifier from Screwfix. Its amazing how much it pulls up that I could barely touch with a rake. I'm haappy I've bought it but now unhappy I'll have to wait a number of weeks to see any improvement
Pic #1 Halfway through. I set it to medium and while I'm sure there's more moss and thatch in there so I'm also thinking not to overdo it and fix it up in stages (or perhaps autumn) so my lawn recovers quicker to allow Badminton to continue asap. As per Screwfix reviews on the scarifier I bought, I ran it without the small collection box which fills up too very quickly.
Pic #2 Now Complete (or main secrion upto half way round the pond). I manually raked up much of the non collected moss into a few piles then took the lazy option and mowed the lawn as I consider my Briggs and Straton mower just as much a hoover as a mower
Totally filled up my standard standard sized brown wheelie bin with what the scarifier brought up and that included having to jump into it a few times to compress it down