Freesat is warning prospective viewers of a shortage of high-definition set-top boxes.

A message posted on its website said: "Due to very high demand there is a shortage of Freesat HD boxes in the shops at the moment.

"We are working with Freesat retailers and manufacturers to increase supplies as soon as possible.

"In the meantime some Freesat retailers will allow you to reserve HD boxes for collection when stock comes in. The Freesat website will continue to give you updates."

The free-to-view satellite TV platform developed by the BBC and ITV was launched on May 6.