David Noakes is the only one of the four leadership candidates not to hold a formal position within the UKIP party structure.
Unlike the other contenders, he appears to place little emphasis on broadening the party's appeal or drawing up a detailed range of policies on issues other than Europe.
Job: Computer consultant
Family: Married, two children
Experience: Anti-EU campaigner, 2005 UKIP election candidate
But his commitment to the cause of fighting the European Union and its influence on British life is hard to doubt.
And his call to arms - "A vote for the Lib Dems, Conservatives or Labour is a vote for the EU police state" - will undoubtedly find favour with some in the party's grass roots.
Put simply, Mr Noakes believes the EU is a grave threat to Britain's freedom and democracy.
If elected UKIP leader, he would do his best, as his website puts it, to "broadcast the terrible truth about the EU police state".
He intends to make the party more effective as a pressure group by mobilising its 16,000 members to spread the anti-EU message to every corner of the UK.
Among his more eye-catching proposals, are making sure a UKIP member is present at every MP's constituency surgery to ensure the truth is told about Europe.
He also wants UKIP members to visit every local councillor in the UK to "warn them they and their counties will be abolished by the EU Regionalisation Plan".
And he wants activists to pay a visit to every local newspaper reporter in the country to warn about what he sees as the threat from the EU to press freedom.
"The aim is to get every British person to make the link, EU equals police state," says Mr Noakes in a short film he has made for the YouTube website.
Other ideas include approaching the trade union movement to organise an anti-EU general strike, setting up a permanent protest outside Parliament and hiring a van to continuously circle Westminster spreading the EU/police state message.
The 53-year-old father of two stood as UKIP's candidate in Truro and St Austell at the 2005 general election, gaining 5.3% of the vote, an increase of 2% on the party's 2001 showing.
Mr Noakes says he would attempt to breathe new life into UKIP's local party structures in the UK - "rather than wasting time in Brussels".
And he would set up a permanent national campaign team and "shadow cabinet".
He is is a computer consultant by profession and also runs the EUtruth website.