Footage still of Bluebird K7 jet-powered hydroplane
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Unseen Donald Campbell speed record footage restored

16 July 2014 Last updated at 13:48 BST

Unseen family footage of Donald Campbell breaking the land and water speed records in 1964 has been restored to mark their 50th anniversaries.

That year in Australia, Campbell set a new land speed record of 403.10mph (644.96km/h) on the dry bed of Lake Eyre on 17 July. On water he reached 276.33mph (444.71km/h) at Lake Dumbleyung on 31 December.

He is the only person to have broken both records in the same year.

The film, How Long A Mile, which Campbell directed, has been restored at Hampshire's Beaulieu Motor Museum.

BBC South Today's Paul Clifton has been speaking to Campbell's nephew Don Wales.