British rock band Coldplay can sell as many tickets to their concerts here at the last minute - and offering restricted views at that - as many other music acts.

About 90 per cent of the additional tickets for their concerts at the National Stadium on Friday (March 31) and Saturday were snapped up by eager fans within two hours of going on sale on Thursday (March 30).

Organiser Live Nation Lushington released 2,000 tickets each night at 1pm, for seats that offered restricted side views of the stage.

The 100,000 tickets initially available for both shows sold out quickly after they went on sale in November last year.

The restricted-view seats were made available after the concerts' production and staging details were finalised.

These cost $78 (for Sections 617 and 634), $168 (for sections 417, 418, 433 & 434) and $268 (for sections 117 & 134) and are available only via the Sports Hub Tix website (www.sportshubtix.sg) and hotline (3158-7888).

The rush for Coldplay tickets have led to scalpers re-selling them at inflated prices and the police have also arrested two men suspected to be involved in a scam to cheat fans looking to buy tickets. Live Nation Lushington cautions fans against buying tickets from unauthorised sellers and has voided those sold on the resale market.

The company and Sports Hub have both sent out advisories for fans attending the shows, and have encouraged them to arrive at least two hours before the band is due to go on at 8pm.

The doors will open at 6pm on Friday and at 6.30pm on Saturday.

Patrons can enter only via the gate printed on their tickets and will not be allowed to re-enter if they leave the concert venue. Overnight queuing is not allowed and the queue for fans with standing pen tickets will start only at 11am on show days.