Capital One UK is a trusted financial services provider offering a range of credit cards and digital banking solutions tailored to customers across the United Kingdom. As part of the global Capital One brand, Capital One UK focuses on helping individuals build or improve their credit profiles while managing everyday spending with confidence. With tools such as eligibility checkers, credit score support, and secure online account access, customers can make informed financial decisions and stay in control of their personal finances.
Known for its customer-first approach and innovative technology, Capital One UK provides flexible credit card options, fraud protection, and easy mobile account management to support modern banking needs. The company is committed to responsible lending, transparent fees, and strong data security, making it a reliable choice for UK consumers seeking credit-building cards, everyday spending solutions, and convenient digital banking services.
Having a problem with a transaction?
Dial 0800 952 5267
The phone number is useful for:
You’re unable to call the retailer/ merchant
You don’t recognise the transaction or amount
If you’ve been a victim of a scam
If the transaction is not on your account
Struggling with payments and need help?
You can also see how to set up a Direct Debit, to avoid falling behind.
If you need to speak to them, please call them on:
0800 952 4966
Report a Fraud
Account fraud
0800 952 5458
Application fraud
0800 952 5143
These phone numbers are useful for:
If you don’t recognise a transaction
If you’ve been a victim of a scam
If your card’s been stolen
General Inquiries
Don’t forget, you can use the app for lots of things relating to your account like:
Viewing transactions
Locking and unlocking your card
Updating your contact details
Existing applications: 0800 952 5252
Call from abroad: +44 115 993 8002
Still need help? Call on:: 03444 812 812
Their opening hours are: Monday to Friday 7am – 9pm | Saturday & Sunday 8am – 5pm
Capital One (UK) Mailing Address
To send a complaint, feedback, compliment, and other things, please note down their mailing address in the UK:
Please send to:
Capital One (Europe) Plc,
PO Box 4929, Interface Business Park,
Royal Wootton Bassett, Swindon,
SN4 8QF
If you want to send them a cheque, please post it to:
Capital One Europe Plc
PO Box 1517
NORTHAMPTON
NN1 9GZ
For All Complaints
Alternatively, you can write to at:
Complaints Resolution
Capital One Europe Plc
PO Box 4928
Swindon SN4 8QF
After you’ve made a complaint
They’ll get in touch, so you know they’ve got your complaint.
They’ll try to resolve your complaint as soon as possible. If it’s complicated, they’ll use a specialist team to look into things. This may take a little extra time, but they’ll keep you up to date with what’s happening.
They’ll let you know the outcome.
What if I’m not happy with the outcome?
If you don’t agree with their final response, or are not willing to allow more time you can contact the Financial Ombudsman Service (FOS) within 6 months of our final response. You can contact them at:
The Financial Ombudsman Service
Exchange Tower
London
E14 9SR.
Need Help Understanding
They try to ensure all their information is easy to understand, but they realise sometimes things can still be unclear. If you’re having difficulties they offer additional support for all customers, conditions or learning disabilities.
If you would like to talk to someone call
0344 481 4814
Their opening hours are:
Monday to Friday 7am – 9pm
Saturday & Sunday 8am – 5pm
Deaf/Hard of Hearing Helpline
Customers using a textphone (or the Relay UK app on a compatible device) can contact them through Relay UK (formerly Typetalk / Text Relay / Next Generation Text) on the numbers below:
General account or lost and stolen card: 18001 0344 481 8852
Monday to Friday 7am – 9pm
Saturday & Sunday 8am – 5pm
Report suspect fraud on your account: 18001 0800 9525066
Monday to Friday 8am – 9pm
Saturday & Sunday 8am – 9pm
If you’re struggling with payments and need help: 18001 0800 9525071
Monday to Friday 8am – 8pm
Saturday and bank holidays 8am – 5pm
Sunday – closed
Data Protection
They have appointed a Data Protection Officer (‘DPO’) to help make sure they are transparent and fair about how they use your data and comply with any law that may affect your privacy.
Their DPO contact details are: DPO Legal Dept, Capital One (Europe) plc, Trent House, Station St, Nottingham NG2 3HX. Email: DataProtection@capitalone.com
Source: Capital One (UK)