Ok, thanks.
The pony has not been wormed for 6months (since the current owner has had him, her own policy) as pony is on good pasture, quality food, pasture maintenance and daily poo picking etc.
However, pony is moving yards and worming is policy. So, the question is
1. Should he be wormed at current yard before moving (unlikely to be agreed to as won't want pastures full of wormy poo)
2. Worm when at new yard with EP and then worm counted after 3 months