People have until the end of today to sign up to Sky's broadband and TV services and get a Marks & Spencer voucher as a reward.
The offer of a free £50 coupon for use at the high street giant for those who sign up online to the company's range of TV packages is set to finish within the next few hours.
Under the terms of the deal, Sky will send the voucher out within 30 days of when subscribers choose to activate their viewing card.
However, those who do sign up in time will have to ensure their card is enabled by January 21st if they want to guarantee they will receive the special offer.
Details of the offer have come after Sky confirmed that both the E4 HD and MGM HD channels have been added to its high definition packs.
Subscribers can enjoy classic films and hit shows such as Hollyoaks with superior picture quality through the new channels.