and one horizontally polarised. A special receiving aerial, containing both vertically and horizontally polarised elements, could receive both signals simultaneously and feed these to a suitable set top box, but would require new transmitters and receiving equipment and aerials; the technique was ultimately not adopted. See also Digital television in the United Kingdom Top Up TV BT TV Freesat High-definition television in the United Kingdom List of British television channels References External links Official sites Digital Switchover UK BBC – Digital – Homepage BBC – Digital – Switchover Freeview official site Top Up TV DigitalUK Ofcom's list of the current licensed digital television services Digital TV Consumer test reports UK Government-funded website to support Digital Switchover Other sites Details of all UK digital transmitters Simon Blackham's DTT Page Switchover guide and podcast UK transmitters: history and plans How to Find Your Local UK Transmitter Digital television in the United Kingdom Lists of British television channels Telecommunications-related introductions in 1998