A total of 3,625 Lloyds Banking Group customers have been given compensation totalling £139,000 after an IT glitch exposed their personal data. 

Around 447,936 Lloyds, Halifax and Bank of Scotland customers were affected by the issue earlier this month that caused customers to see other people’s transactions. 

Money spoke to one customer at the time, who said he was able to see other people’s national insurance numbers and transactions as a result. 

Jasjyot Singh, consumer relations boss at Lloyds, apologised for the incident on behalf of the bank in a letter disclosing the scope of the issue to Parliament’s Treasury Select Committee.

The banking firm confirmed 114,182 people clicked on other people’s transactions when they became visible, and that may have shown them more detailed information such as:

• account details
• national insurance numbers
• payment references

The letter highlighted that the personal data of individuals who were not Lloyds Group customers had also been visible.

It said no customers have so far been identified as suffering financial losses as a result of the problem, which was caused by a “software defect” from an overnight IT update.

Chair of the Treasury Committee, Dame Meg Hillier, said: “What this incident brings into focus is the fact that there is a trade-off. By moving more interactions with our bank online, we place our faith in technology, which can suffer unpredictable errors.”

A Lloyds spokesman said: “On 12 March, some customers using our app may have briefly seen transactions that were not their own following an IT change.

“The issue was quickly identified and resolved, and we’ve contacted customers whose transactions may have been visible for that short time.”