Customers who sign up to Sky's broadband TV deals have the chance to take up a new and improved version of the company's set-top box.
The new Sky+HD box includes 1TB of storage, which is four times the storage capacity of the previous model, meaning it can store up to 240 hours of high definition programming.
It could also hold around 100 films in HD, as well as 740 hours of standard definition content.
Hilary Perchard, Director of Product Management and Marketing at Sky, said: "We want to offer people as much choice as possible.
"We know customers are happy with the storage on our standard box, but the Sky+HD 1TB will appeal to people who want to watch and store even more HD TV."
The launch of the new set-top box has come after Sky confirmed plans to launch Europe's first dedicated 3D TV channel in April.
TVs from the likes of LG and Panasonic are expected to be compatible with the platform.