The series 5 finale of Game of Thrones set viewing records for Sky in the UK

"More than 3.1 million Britons tuned in to the see the conclusion to the sprawling fantasy series – making it the most watched Sky entertainment program of all time.
According to the satellite broadcaster, the unbelievable figures include the live audiences for both the 2am US simulcast and 9pm UK broadcast on June 15.
Sky says the record breaking figures also include the customers watching their Sky+ recordings and catching up on-demand over the seven days following the broadcast."

Source:  Daily Express, 27th June 2015