I’m setting about replacing the coils on the H&H with Arnott airbags. I received the bags a few months ago and when I opened the boxes this am I find that they do not include the pins that are used to attach the bags to the body. The previous owner removed the bags and did not reset the pins.
Does anyone have a set of spare pins for these bags or any knowledge as to where I can get them?

Do they differ from the standard ones? If they're standard, Island4x4 will sell you a full set (Britpart) for very little: https://www.island-4x4.co.uk/spring-fitting-full-isl003-p-5234.html

If they're different for Arnott bags, I guess you'll have to ask Arnott. We don't seem to have as many Arnott users over here, possibly due to the shipping costs and poor warranty support for overseas customers.

They are the same pins as Dunlops. I just bought a full set from Island 4X4, I think it was something like 6£.

I have fitted Arnott Gen III's to mine. Had them on now for ten years or so.
The standard pins will fit. I remember running an electric drill bit through the holes to make sure they slide in OK.
Since then I have replaced the pins with stainless steel R clips that I sourced on Ebay. It was a number of years ago however.
There are many suppliers. This is an example of the type I mean:-

https://www.ebay.co.uk/itm/R-Spring-Clips-Retaining-Pin-Shaft-Beta-Stainless-Steel-Hair-Cotter-Pins/283333021341?var=584251117380&hash=item41f7f6ce9dⓂ️mUFnBV5BbojEtPCXXlt_Kvg

You will have to match the size as close as possible. Stainless doesn't rust unlike the original ones.

Addendum: I have got a spare pin in the garage which I can measure if you want.

Thanks for intel.
I found them on Island4x4 for small money but they want a kings ransom to ship them via FEDEx to USA....
What happened to popping down to post office and dropping them in mail?

Isn't LRDirect the same company as Rimmer Brothers? Rimmer will definitely send them by Royal Mail/USPS. I'm in Canada and that's the way I get most of my parts (to Canada), unless it's too big or heavy or if I'm in a big hurry.

No, LRDirect and Rimmers are completely different companies. Rimmers are a bit more expensive than the others but their deliveries are good.

Is LRDirect and Paddock Spares the same? My memory is fuzzy, but I seem to remember starting an order with one and having it completed by the other. At any rate, several of those companies are happy to use Royal Mail.