Banking statistics UK: Biggest banks by market share and customers
Discover the biggest banks in the UK, as well as how often Brits change banks.
We’ve gathered the latest banking statistics on the biggest and best banks in the UK, along with carrying out our own research revealing how often people are switching their accounts.
What is the most popular bank in the UK?
The most popular banking group in the UK is Lloyds, with approximately 28 million Brits choosing Lloyds Bank, Halifax, Bank of Scotland or another of its subsidiaries. Nationwide (now including Virgin Money) comes in second with around 24.5 million customers, followed by Barclays and NatWest Group (including RBS and Ulster Bank) with over 20 million customers. HSBC group (including first direct and M&S Bank) rounds out the top five with 15.3 million customers.
Mergers mean that multiple banks now fall under one banking group name in certain cases, meaning they have a higher number of customers. Some of these banks also have a bigger global presence, meaning they have a higher number of customers worldwide.
| Bank | Number of UK customers |
|---|---|
| Lloyds Banking Group | 28 million |
| Nationwide | 24.5 million |
| Barclays | 20 million |
| NatWest Group | 20 million |
| HSBC | 15.3 million |
What are the biggest banks in the UK by market share?
HSBC has the largest market cap out of all UK banks by far, at approximately £234.65 billion in May 2026. This is more than 3 times larger than Barclays, the second largest UK bank by market cap at £60.22 billion. Lloyds is in third place with £58.71 billion, followed closely by Natwest (£46.67 billion) and Standard Chartered Bank (£42.19 billion).
| Bank | Market cap |
|---|---|
| HSBC | £234.65 billion |
| Barclays | £60.22 billion |
| Lloyds Banking Group | £58.71 billion |
| NatWest Group | £46.67 billion |
| Standard Chartered | £42.19 billion |
Which UK bank was most profitable in 2025?
HSBC had the highest net profit among UK banks by far in 2025, generating £23.5 billion. This is largely due to its major global footprint. Barclays came second with £9.14 billion, followed by NatWest Group with £7.71 billion, Lloyds Banking Group with £6.7 billion and Standard Chartered with approximately £5.5 billion.
| Bank | Reported pre-tax profit |
|---|---|
| HSBC | £23.5 billion |
| Barclays | £9.14 billion |
| NatWest Group | £7.71 billion |
| Lloyds Banking Group | £6.7 billion |
| Standard Chartered | £5.5 billion |
UK banks by customer satisfaction rating
Although traditional UK banks tend to have a higher market share and number of customers, digital challenger banks seem to outperform them when it comes to customer satisfaction.
In the 2026 Finder Customer Satisfaction Award for current accounts, first direct, Starling, Revolut and Chase topped the table – 97% of the people we surveyed said they would recommend these banks to a friend. For more details head over to our best banks in the UK guide.
| Bank | Rating |
|---|---|
| first direct | 97% |
| Starling | 97% |
| Revolut | 97% |
| Chase | 97% |
| NatWest | 95% |
| HSBC | 94% |
| Monzo | 93% |
| iFAST Global Bank | 93% |
| Lloyds Bank | 93% |
| Barclays | 92% |
| Nationwide | 91% |
| TSB | 90% |
| RBS | 90% |
| Santander | 90% |
| Metro Bank | 87% |
| Biscuit by Zopa | 87% |
| Kroo | 87% |
| Halifax | 86% |
| Bank of Scotland | 80% |
| Virgin Money | 77% |
| The Co-operative Bank | 77% |
| Monese | 77% |
Sources
Click here for more research. For all media enquiries, please contact –
Matt Mckenna
UK Head of Communications
T: +44 20 8191 8806
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