i was changing the filters the other day and noticed this pipe looking worse for wear, I am away from the vehicle at the moment but wanted to order a new part but am struggling to identify it, can anyone point me in the right direction ?

Looks like a coolant pipe to the heater box.
An idea of which engine may help someone give you a part no.

Sorry it’s a TD5 defender 2004

Yes, I had one of these go on my TD5 a couple of months ago. It got a hole in it as I was trundling northwards on the M6 and I lost most of my water. Not having anything to mend it with, I called then AA and the man managed to bypass it by unclipping the heater hoses and joining the rubber bits together with some hose connectors he had in his van. I bought a new one before next attempting a long journey. It's a PEP102671. On some suppliers' websites it say 'from feed to oil cooler', even though it doesn't go anywhere near the oil cooler, so don't let that put you off if you see it. Well worth replacing as the metal is paper thin.

That’s absolutely fantastic, thanks a bunch. will order up the part asap and have backup fix at hand.