AN ISLAND haven on Loch Lomond which was once home to 'the fastest woman on the water' is being put up for sale – for somewhere north of half a million pounds.

Uninhabited for the last 20 years, the island of Inchconnachan has been owned by the local Colquhoun family since the 14th century.

Inchconnachan is also home to Scotland's only wallaby colony, after Fiona, Countess of Arran, daughter of Iain Colquhoun, the 29th Laird of Luss, introduced the animals to the island in the 1950s.

Offers of more than £500,000 are being invited for the 103-acre property, which is home to a derelict Colonial-style timber bungalow dating from the 1920s.

The bungalow was latterly the holiday home of the Countess, who reached a top speed of 102mph in a powerboat on Lake Windemere in 1980, claiming the Seagrave Trophy.

The Colquhoun family's property owning company, Luss Estates, say Inchconnachan is regularly plagued by large numbers of wild campers.

Estate agents Savills and Knight Frank say that "exclusive access by boat" to Inchconnachan will be from the shore of Luss nearby.

The island has planning permission for a four-bedroom lodge, a one-bedroom boat house and a pier.

Cameron Ewer from Savills said: “This is an extraordinary opportunity to acquire a beautiful and completely private, yet accessible, retreat and create a wonderful new residence there.

"For those seeking peace and seclusion, yet wanting all that this part of Scotland has to offer in the way of nature and water-based sport and activities, this is surely the ultimate prize.”

Tom Stewart-Moore from Knight Frank added: “To be able to build your own house on your own private island but yet in a very accessible and beautiful part of the country will be a dream for many and is likely to have global appeal.”