Check whether an invoice, payment change or HMRC message is a scam

Help me check whether this message is a scam.

Who it claims to be from: [supplier, HMRC, bank, delivery company]
How it arrived: [email, text, phone, letter]
The message: [paste the text; don't click any links]
Was I expecting it: [yes or no]

First ask me up to 3 short questions. Wait for my answers.

Then:
1. The warning signs in this message, if any.
2. How to check it safely: who to contact and how, using details I already have, not the ones in the message.
3. What not to do until it's checked.
4. Look up how to report suspicious emails and HMRC scams on GOV.UK, name the pages and summarise the steps.
5. A short rule for my team so bank detail changes are always checked by phone.

Only use what I've told you, leave blanks for anything I haven't given, and don't invent facts or figures. UK English.

For GOV.UK pages on reporting suspicious emails and HMRC scams, use web search and name the page you used. If it doesn't search on its own, open View all tools and choose Search.

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