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Frequently Asked Questions

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Frequently Asked Questions

You are now able to update your personal details via your Cynergy Bank Mobile Banking app or Online Banking . Visit the Contact us page for more details.

Question Categories

Icon: FAQs about managing your account

Managing your account

  • Account number and sort code
Icon: FAQs about personal banking and personal bank accounts

Personal bank accounts

Icon: FAQs about business bank accounts

Business bank accounts

Icon: FAQs about staying secure when banking

Security

Icon: FAQs about Online Banking

Online Banking

Icon: FAQs about using our website and digital banking tools

Using our website

Icon: Mobile Large (CBF)

Cynergy Bank Mobile Banking App

Ways you can contact us

Secure message

Send us a secure message by logging into .

Email us

using our online form.

Phone us

0345 850 5555 (or +44 (0) 20 3375 6422 if you're calling from outside the UK)

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Contact us

Existing customers
Please login to Online Banking or Mobile App, and send us a Secure Message.

Email us (via our online form)
Click here for our online form

Telephone
0345 850 5555 or +44 20 3375 6422 (if calling from abroad). Calls may be recorded for monitoring and training.

Customer Service telephone opening hours
9.00am – 6.00pm Monday to Friday

More ways to contact us

Modern Slavery Statement

Read our statement, financial year ending 2024

©Cynergy Bank plc 2026.

Cynergy Bank plc. Registered in England and Wales: 04728421.
Registered office: 4th Floor, One New Change, London EC4M 9AF.
Correspondence address: PO Box 80030, London EC4P 4NG.

Cynergy Bank plc is authorised by the Prudential Regulation Authority and regulated by the Financial Conduct Authority and the Prudential Regulation Authority. Asset Based Lending is exempt from regulation by the Financial Conduct Authority and the Prudential Regulation Authority. Our main business is the provision of financial services under registration number no. 575105. Cynergy Bank and the curve logo are registered trademarks.

Eligible deposits with Cynergy Bank plc are protected up to a total of £120,000 by the Financial Services Compensation Scheme, the UK’s deposit guarantee scheme. Any deposits you hold above the protected limit are unlikely to be covered. Further information is available here or at https://www.fscs.org.uk/ .

For free and impartial advice, set up by the government, click here .

Cynergy Bank plc is a member of UK Finance.

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BSI ISO/IEC 27001 Information Security Management badge (IS 568376) - BLUE