I received this email from Rebecca:
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Sorry you’ll have to excuse the short email.
Currently out of the office (20:25 here in the UK and been allowed to go home!)
My manager Michael might still be there answering emails if you want to call +44 1371 606056?

Our company is registered as Cambridge Microprocessor Systems Ltd.
We are a subsidy of the main microprocessor manufacturing company setup specifically for Bitcoin products.

We operate from the same offices and factory in Essex - We are trying to keep this very separate due to the work we do trading as CMS (Cambridge Microprocessor Systems Ltd.) with the UK government.

I hope that helps.

Thanks,

Rebecca
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So, I went to: https://www.gov.uk/get-information-about-a-company

and did a search for: Cambridge Microprocessor Systems Limited

I confirmed the company existed for as long as they say in their press release.

Date of Incorporation: 11/04/1983

I also did a whois lookup on their domain: cms.uk.com  (domain 1st registered in 1998)

Both companies are in the same building and their phone numbers are only 1 digit off. I called both numbers and voice is the same on both messages.  So far, it looks legit boys.