News, views and top stories in your inbox. Don't miss our must-read newsletter Sign up Thank you for subscribing We have more newsletters Show me See our privacy notice Invalid Email

Adele fans attempting to buy tickets for the singer's upcoming European tour were reportedly able to see other people's personal information as they tried to check out online yesterday.

Advance tickets were made available to members of the Adele.com website on Tuesday morning. Demand has been massive, with many people struggling to complete their purchases due to the vast volume of traffic hitting the site.

However, several fans told the BBC that, when they tried to complete their purchase, they were taken to checkout pages listing tickets for other shows, along with credit and debit card details that weren't their own.

Live music and technology firm Songkick, which is running the online ticketing process, admitted that some personal information was exposed but denied that this included any financial information.

"Songkick was responsible for selling 40 per cent of tickets directly to fans, a portion of whom were unfortunately able to preview other users' shopping carts for brief periods due to extreme load," Songkick said in a statement.

(Image: Adele.com)

"At no time was anyone able to access another person's password, nor their payment or credit card details (which are not retained by Songkick). We take the security of our users and Adele's fans very seriously, and we apologise for the alarm we have caused to those purchasers who experienced issues."

According to Gary Newe, technical director at security firm F5 Networks, the issues were most likely caused by a combination of badly written application code and a malfunctioning network device.

"Often this happens if developer focus has been placed on creating new features, or getting an application online quickly, which is an everyday pressure for coders. Errors can usually be mitigated by regular testing to identify and fix vulnerabilities," he said.

This will be the singer's first tour since 2011. Advance tickets went on sale at 9am GMT today, and will go on sale general sale at 9am on 4 December 2015, when they will be available from major ticket outlets like Ticketmaster , See Tickets and The Ticket Factory .

(Image: NBC)

The 36-date tour, will kick off in Belfast on 29th February 2016, before stopping in to London, Birmingham, Manchester, and then onto Europe. Songkick has sold 57,000 tickets to fans, and advance sales are now sold out.

The singer, who released her latest album 25 on Friday, recently set a new record for the most number of LPs sold in a UK chart week, beating record-holders Oasis.

Adele has managed to shift 737,000 copies since Friday, which means she has overtaken Oasis’ Be Here Now record of 696,000 in 1997 by a considerable amount.

In the US, Adele’s new LP also broke records by selling nearly three million copies in its debut week.