Looking to move my drivers seat back another couple of inches, has anyone done this before? Is it easy to do?, thanks in advance guys, 👍🏻

That's a pretty tall order. You'll need to find longer rails and revamp the system entirely or just buy the seats and rails with longer travel from a different model but either way it's going to be pricey with no real guarantee that it will work well and look good.

How tall are you?

I'm only 6' but have arthritis in my right hip, it's ok at full length but would prefer a little more if possible, might just take seat out and access, I have seen somewhere someone did it on a discovery disco, can't remember where I saw it though.

Or mount it further back. If safe to do so.

I'm surprised. As I'm 6'2 and lanky and don't have it all the way back

Me too 6ft 1" with arthritis in the hip, I don't need the seat all the way back either.
But then I do have on 31" legs lol  Just bought a RRS 06 MY HSE TDV6 136,000 miles, to be a second car to my bland, boring Mitsubishi Outlander 68 plate 2.0 petrol 4