It appears Mini kingdom ignitions and all I've seen on Google do not match my Mk2 ignition. My question is, are Mk2 ignitions different to other Mini's?
https://minikingdomonline.com.au/produc ... on-switch/

What is the difference are you referring to?

There seems to be a chromed ring spacer missing on replacement ignitions.

Can you just swap the chrome ring extension over? As long as the threaded section is the same length there shouldn't be a problem.

The chrome spacer was introduced about 1969. Most Mk 1 Coopers did not have the spacer. I am not able to give any reason for the change except maybe it was easier to reach and also offered more clearance to turn the key. You may need to locate a second hand spacer. Cheers Jim.

Is there a part number for this chrome spacer and would the switch need to be longer than the standard switch.

I think I've seen them on the Mini K.

I think the switch is longer. I thought they were only on the Cooper S, I have a K with one and a K without... The one with the spacer has a somewhat more questionable history though.

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Here is a period photo of a Sep 1965 Cooper S (sorry about the quality) and it looks like it has the extended ignition switch. I have looked through my photos of unrestored cars and it looks like every MK1 Cooper S had them.

I thought I sent an answer to this question a few minutes ago but it does not appear to have launched.
Basically I was saying what gtogreen has said. My '66 Mk1, '69 mini K and '70S all have that spacer. Photos from the competitions dept of early-to-mid '60s cars all have the spacer too.

More examples.