It is a regulation for mot now, some testers will ignore it and some wont
You will need to put uk vti cluster in, it will work fine
I've been told by a mate who is an MOT tester and he states that the speedo is not checked as part of the MOT!!
You may find this useful - I found it on the internet by chance and if you scroll down a bit there is something on there with regards to the speedo.
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