One of the most popular US breakfast television shows is to broadcast from inside Buckingham Palace as part of a campaign to promote Britain's tourism industry.

ABC's Good Morning America will present a live transmission from the Throne Room of the Queen's main London residence on Friday, with other hosts entertaining the programme's 5 million strong audience from Edinburgh's Palace of Holyroodhouse.

The broadcast will be preceded on Thursday by a similar event from inside Windsor Castle.

The exclusive access granted by the Royal households is part of a new drive to promote Britain as a holiday destination to foreign audiences.

Although 2004 was a record year for international visitors to the UK, the effects of the July terrorist attacks in central London are expected to drive down inbound tourism revenue by £750 million compared to earlier forecasts.

Tom Wright, VisitBritain chief executive, said: "The Royal family's popularity in the US, as well as our royal heritage and our historic palaces and attractions will help us encourage support for British tourism and remind consumers that there is still plenty of reasons to visit Britain."

Ben Sherwood, executive producer of Good Morning America, added: "ABC News will give millions of viewers an extraordinary, unprecedented look inside the Royal Palaces."