Britain's newest supergran

Mrs Murray celebrated her homecoming with a glass of champagne.

"It's utterly wonderful to be here," she said.

"We've had a great and fantastic adventure."

The pair began their joint adventures at Brooklands airfield on May 31. Flying up to 11 hours a day, they travelled east, via Europe, Asia, America and the Arctic.

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But the journey was not without its perils. Mrs Murray had to make an emergency landing over Jordan, when her engine cut out.

They also faced problems getting clearance to fly over Russia, China, and Pakistan, where they were given four hours to leave the country's airspace or face being shot down.

Highlights

But Mrs Murray says the trip was well worth it, despite the drama and fatigue.

"I've seen the world - I've seen things that people will never see, that they can only dream of," she told the BBC.

She said the highlight of the trip was a day spent flying over Greenland.

She was a month behind schedule and had been expecting high winds and cloud.

Instead, the day was "stunning", and in clear, sunny conditions, she flew over icebergs and polar bears.

Husband's machine

Mrs Murray started flying when her husband Simon bought a helicopter but didn't have time to fly it himself.

He is also now a trained pilot but his wife has grabbed the headlines.

Colin Bodill: also a grandparent

She is also no stranger to daredevil adventures. In the past she has trekked in Bhutan, run a marathon in Kenya, and in 1997, flew around the world in a helicopter with a co-pilot.

Mr Bodill revealed his helicopter colleague took on this latest challenge when he told her his plans and asked what she was doing for the millennium.

They got sponsorship for the trip from the internet company now.com, and hope to have raised £700,000 for Operation Smile, a charity which helps children in developing countries by giving them facial reconstructive surgery.