Wow, never thought i'd stir up so much interest lol.
Anyway, read the destructions again and it said if just the trigger is used with NO attachment it'll mix the soap in...
So just been out to wash the car again. I used just the trigger and lovely suds were sprayed over the car, used a sponge to rub em in then attached the high pressure nozzle to rinse off.
Such an improvement. Was really P***ed off yesterday when it didn't clean properly.
Typical bloke not reading the literature that comes with it.