It's a good job I am on the small side or there is no way I would of fitted underneath or have been able to get my hands in the smallest of places.
Thankfully the drain and refill plug were relatively easy to undo.
The refilling was made easier with this........
https://www.amazon.co.uk/gp/product/B00 ... UTF8&psc=1" onclick="window.open(this.href);return false;
Takes a litre at a time and it took about 5 mins of pumping to empty. The oil in a bucket of hot water to heat it up helped considerably

Cheers Steve
PS The drain plug had the bare minimum of debris on the magnet. Not bad for a gearbox with 300Km on the clock