Hi. I’ve read a few posts on here about fuel filter change . But just a question is it fill new filter with diesel first then connect pipes and it should start ???

That’s how I did mine. I used a piece of hose and a tiny funnel and filled each inlet/outlet up until it came out of the others. I’ve heard others submerse the new filter housing in a can of diesel and wait until the air bubbles stop coming out. Past: FL2 TD4 HSE Auto
Evoque SD4 Dynamic Lux Auto
Present: Audi A3 S Line.

When you change the fuel filter on a Freelander 2 it needs priming as the system does not self prime, personally when I change mine I bleed the system with a vacuum pump connected to the return outlet of the fuel filter the one to the tank (looking at the filter from the top it is the rear on the left) this extracts all the air in the system, from the filter, fuel pump and injector lines. Once the system is purged of air the vehicle should start without any problem.

I've done several filter changes on mine now over the years, and all I do is (a) empty the old filter into a large, clean jar - note: it holds a surprising amount of diesel and you need to shake it about a bit to make sure you've got every drop; (b) use a small syringe to inject the diesel into the inlet port of the new filter; (c) fit new filter and start engine.

Never had any problems except that in the first 30 seconds of running you may get a bit of a cough and a splutter as the air gets drawn through the system. After that it's fine.

Diesel is not nice stuff to get on your hands, and this method is pretty clean and foolproof (unless you knock the jar of diesel over, of course)

Erm, so a diesel filter holding filtered filth is then tipped into a jar and used on a clean system.  FL2 MY10 TD4 GS traded in at 2 years
FL2 MY13 TD4 GS Current

I always keep a can of diesel in the workshop as I fill EVERY diesel fuel filter when I change them before even attempting to start the engine. Past: FL2 TD4 HSE Auto
Evoque SD4 Dynamic Lux Auto
Present: Audi A3 S Line.

 FL2 MY10 TD4 GS traded in at 2 years
FL2 MY13 TD4 GS Current

For me, the diesel that comes out of the old filter and any sucked through to prime it, eventually gets mixed with some of the old engine oil and used as wood preservative. 2005 D3 2.7 Auto
Previously:
2010 MY FL2 TD4e GS - Now gone at 199,500 miles, about 135,000 of them mine.
‘93 Defender 110 200TDi CSW
‘87 Defender 90 4 cyl Petrol
‘83 110 CSW V8 - best ever!
Range Rover 2-door V8 (not sure of year - 4-speed box and vacuum diff switch)
Series III SWB Diesel