So when i go down to the petrol station and fill the FF up the fuel keeps stopping like the tank is full even when its more or less empty. I have checked down the hose and the stopper hasn't deployed, however every time you put the correct nozzle as in Diesel into the refill hose it cuts out, i more or less have to hold the trigger and hose with two hands to get a full fill up, a very laborious task. Any answers here most appreciated.

Put the filler nozzle in upside down  Got - 2017 SDV8 Autobiography in Loire Blue
Had- 2008 TDV8 Vogue SE in Java black
Had - 2007 S/C in Stornoway Grey

have you seen this before?

Yes, quite a common problem, various threads on here about it 2007 Zermatt Silver TDV8 Vogue SE - now sold but was a great car!

Try re-setting it anyway incase it's partially deployed - useful thread here

I find Sainsbury to be the worst pumps for this, esso seem to be much better

Insert the filler nozzle at the 9 o'clock position

So what did Land rover say about this, did they fix it because surely this is a design fault?

I had this when I recently bought my TDV8 - I thought it was a design fault but it turned out that the shutters were just deployed and resetting with the tool results in filling at full pump flow with the nozzle held normally.

Just as well, because it takes so much, I was getting cramp in my hand trying to hold the flow rate down while it filled...

I guess that LR must have expected this issue because they supplied the tool in every RR