Action Fraud UK: https://www.actionfraud.police.uk/

Bank of Scotland: https://www.bankofscotland.co.uk/securityandprivacy/protecting-yourself-from-fraud/contact-us.html

Barclays:

https://www.barclays.co.uk/fraud-and-scams/reporting-scams-and-reporting-fraud/

Danske:

https://danskebank.co.uk/personal/help/reporting-fraud-and-unauthorised-transactions

First Direct:

https://www.firstdirect.com/help/security-centre/fraud-awareness/

HSBC:

https://www.hsbc.co.uk/help/security-centre/

Halifax:

https://www.halifax.co.uk/aboutonline/security/protecting-yourself-from-fraud/contact-us.html

Lloyds Bank:

https://www.lloydsbank.com/help-guidance/protecting-yourself-from-fraud/contact-us.html

Monzo:

https://monzo.com/fraud/

Nationwide:

https://www.nationwide.co.uk/help/fraud-and-security/

Natwest:

https://www.natwest.com/fraud-and-security/report-fraud.html

RBS:

https://www.rbs.co.uk/fraud-and-security/report-fraud.html

Santander:

https://www.santander.co.uk/personal/support/fraud-and-security/how-to-report-fraud

Starling:

https://www.starlingbank.com/mobile-banking-security/fraud/

TSB:

https://www.tsb.co.uk/fraud-prevention-centre/how-to-report-fraud/

Ulster Bank:

https://www.rbs.co.uk/fraud-and-security/report-fraud.html