Four Brits have been arrested in relation to recent attacks carried out by hacking groups LulzSec and Anonymous.

An unnamed 20 year-old from Mexborough, Doncaster and a 24 year-old man from Warminster in Wiltshire have been arrested in connection with criminal activity carried out by a hacker that uses the handle 'Kayla' and is considered to be a major player in LulzSec.

The men are currently being detained for further questioning and their computer equipment has been seized for forensic examination.

"The arrests relate to our enquiries into a series of serious computer intrusions and online denial-of-service attacks recently suffered by a number of multi-national companies, public institutions and government and law-enforcement agencies in Great Britain and the US," said Detective Inspector Mark Raymond from the Metropolitan Police's Central e-Crime Unit (PCeU).

"We are working to detect and bring before the courts those responsible for these offences, to disrupt such groups, and to deter others thinking of participating in this type of criminal activity."

Meanwhile, a further two men , 20 year-old Christopher Jan Weatherhead from Northampton and Ashley Rhodes, 26, from London have been charged with "conspiracy to do an unauthorised act in relation to a computer," in a separate case.

The police did not detail the offences the pair are thought to have committed, leading many to speculate they relate to attacks on UK-based firms and organisations such as the attack on the website of the Serious Organised Crime Agency (SOCA) in June this year. The website was left inaccessible for several hours following a DoS attack. LulzSec later claimed responsibility for the attack on its Twitter page just hours after the hacking group revealed it has joined forces with Anonymous, another hacking organisation.

Weatherhead and Rhodes have been remanded on bail and will appear at the City of Westminster Magistrates' Court on September 7.

Earlier this week Peter David Gibson, 22, from Hartlepool, and an unnamed 17-year old were also charged in connection with Anonymous attacks.