Beware of all phishing. Spear phishing is more precise and aimed a little more this looks to be a more sophisticated standard phish.
If you are in any doubt, contact the SRA but do not click on any links or open any documents attached without being totally convinced of its authenticity.
The email in question will be from email@example.com and not firstname.lastname@example.org (ie no UK on the end).
SRA response: www.sra.org.uk/sra/news/scam-email-sra.page
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