Banks and building societies
Bank of Ireland UK phone numbers
Edited by Richard BarkerChecked 13 October 2026
Bank of Ireland UK publishes 13 numbers for you to call on its own website. We list each one with the page it is on (3 pages in all), a short quote from that page and the date we checked it.
Numbers to call Bank of Ireland UK
What each line is for, as Bank of Ireland UK describes it, with opening hours where it gives them.
- 0800 121 7790
You call them on this number
Fraud concerns (Northern Ireland and UK freephone)
Source: “and business) NI & UK Freephone: 0800 121 7790” (opens in a new tab). Checked 13 October 2026.
- 0345 736 5555
You call them on this number
Northern Ireland and Great Britain customers
Source: “Northern Ireland and Great Britain customers: 03457 365 555” (opens in a new tab). Checked 13 October 2026.
- 0800 085 0444
You call them on this number
Apply for an overdraft
Source: “Apply for an overdraft 0800 0850 444” (opens in a new tab). Checked 13 October 2026.
- 0800 169 0082
You call them on this number
Apply for a new mortgage
Source: “Apply for a New Mortgage 0800 169 0082” (opens in a new tab). Checked 13 October 2026.
- 0345 300 8000
You call them on this number
Existing mortgage queries
Source: “Information on your Existing Mortgage 0345 300 8000” (opens in a new tab). Checked 13 October 2026.
- 028 9043 3000
You call them on this number
Business and corporate banking, and Northern Ireland head office
Source: “Business Banking 028 9043 3000” (opens in a new tab). Checked 13 October 2026.
- 0345 601 6157
You call them on this number
General account queries
Source: “General Account Queries 0345 6016 157” (opens in a new tab). Checked 13 October 2026.
- 0345 309 8123
You call them on this number
Business On Line helpdesk (Northern Ireland)
Source: “Business On Line Helpdesk from Northern Ireland 0345 309 8123” (opens in a new tab). Checked 13 October 2026.
- 0345 604 5552
You call them on this number
Business On Line sales team (Northern Ireland)
Source: “Business On Line Sales Team from Northern Ireland 0345 604 5552” (opens in a new tab). Checked 13 October 2026.
- 0345 604 1070
You call them on this number
Commercial credit card services
Source: “Commercial Credit Card Services 0345 604 1070” (opens in a new tab). Checked 13 October 2026.
- 0345 161 0020
You call them on this number
Lost or stolen debit cards or account security concerns, from abroad
Hours: 24 hours a day
Source: “concerns over account security Abroad +44 345 1610020” (opens in a new tab). Checked 13 October 2026.
- 0800 032 1288
You call them on this number
Compromised Business On Line or FXPay security credentials
Source: “FXPay Security Credentials 0800 032 1288” (opens in a new tab). Checked 13 October 2026.
- 0345 850 1234
You call them on this number
Customer service desk for Great Britain customers
Hours: Monday to Friday 9am to 5pm, Saturday and bank holidays 9am to 2pm
Source: “Customer Service Desk: Tel: 0345 850 1234” (opens in a new tab). Checked 13 October 2026.
How scams that copy banks and building societies work
UK Finance describes the usual pattern: a caller says they are from your bank or the police, tells you there has been fraud on your account, and asks you to move your money to a "safe account". The criminal controls that account.
Stop Scams UK runs 159, which puts you through to your bank and cannot be spoofed. Hang up and call 159 or the number on the back of your card.
This could still be a scam call
Criminals can make their number look like a genuine one (this is called spoofing). If someone calls from this number and asks for money, bank details, a code or passwords, hang up. Then call Bank of Ireland UK back on the number on the back of your card, or call 159, which connects you to your bank.
Safe ways to check
- Call 159 (opens in a new tab): Stop Scams UK runs 159, which connects you to your bank. It cannot be spoofed.
- Bank of Ireland UK's own contact page (opens in a new tab): Where this number is published.
- Report Fraud (opens in a new tab): Report fraud and cyber crime in England, Wales and Northern Ireland. In Scotland, call Police Scotland on 101.
- Forward scam texts to 7726 (opens in a new tab): It is free, and reports the message to your mobile provider.
- How number spoofing works: Why a genuine number on your screen does not prove who is calling.
Questions about Bank of Ireland UK’s numbers
What numbers can I call Bank of Ireland UK on?
Bank of Ireland UK publishes 13 numbers for the public to call. They include: 0800 121 7790 (Fraud concerns (Northern Ireland and UK freephone)); 0345 736 5555 (Northern Ireland and Great Britain customers); 0800 085 0444 (Apply for an overdraft). Check the source page for each one before you call, as numbers and opening hours change.
Does Bank of Ireland UK publish a number on its own website that is not listed here? Suggest a number for Bank of Ireland UK.
Sources and checks
This page relies on:
- Bank of Ireland UK: bankofireland.com/help-centre/contact-us/
- Bank of Ireland UK: bankofirelanduk.com/help-and-support/contact-us/bank-of-ireland-uk/
- Bank of Ireland UK: bankofirelanduk.com/help-and-support/contact-us/bank-of-ireland-uk-great-britain/
Checked on 13 October 2026. Read how we build the directory. How we check our information. Spotted a mistake? Tell us and we will put it right.