Organisers want to expand the capacity by more than 25,000

Organiser Michael Eavis said people now have until midnight on Monday to log their details and be in with a chance of securing a place.

Mr Eavis said he took the decision after more than 1,200 people registered every hour on Tuesday.

Organisers have emphasised registration does not guarantee a ticket when they go on sale on 1 April.

The system, introduced to deter touts, had been due to end on Thursday.

It asks for personal details and a passport photograph, which will be put on the ticket if the registered person buys one.

Record numbers

Eavis said the new ticket system had been well-supported by festival-goers and had expected over 300,000 to have signed up by the end of Wednesday.

"It's gone very well. It was a bit slow to start with, but it's picked up and reached a bit of a crescendo over the past two days.

"People have taken it all very well because it does seem like you have to go through a lot of obstacles to get to the festival. They could have said 'it's not worth it'."

The three-day event returns to Worthy Farm, near Pilton, Somerset on 22 June, with The Who, Arctic Monkeys and Bjork already confirmed on the bill.

The site has been enlarged this year and could accommodate a record 145,000 fans, with tickets costing �150.