TD5 Defender 1999 Fuel Filler Hose

Looking for a part number for a fuel filler hose for my lads TD5 Defender. I bought a WLH500100 but it doesnt fit the tank, too big, or the filler spout, too small. Anyone have an idea what the correct part number is ?

Im fitting the tank back tomorrow, following replacing the fuel pump. The existing was cut off, as it leaked pretty badly...

VIN number via LRCAT says use a WLH500060, but its superseded by WLH500100 But its too big tank end... Anyone else had this ? So frustrating.

https://www.lrworkshop.com/diagrams/land-rover-defender-fuel-air-emission-systems/fuel-system

check here

Cheers, that was the reference I used this morning when I called John Craddocks... Britpart hose is still too big at tank end, its about 5mm too wide, and no amount of tightening of a jubilee clip is going to close that gap without puckering up to cause a leak...

Sorted, got a good quality stainless jubilee clip, and a bucket of hot water... clamped it on a treat... Was trying to do it with a hose that had been out in the cold all day.