From the UKIP constitution...
Objectives:
2.3 The Party believes that the United Kingdom of Great Britain and Northern Ireland (hereinafter “The United Kingdom”) should only be governed by her own citizens and that its governance shall at all times be conducted first and foremost in the interests of the United Kingdom and its peoples and that the only laws that should apply within the jurisdiction of the United Kingdom are those wholly made by the Parliament of the United Kingdom. To that end it shall be the policy of the Party that the United Kingdom shall cease to be a member of the European Union and shall not thereafter make any Treaty or join any international organisation which involves in any way the surrender of any part of the United Kingdom’s sovereignty. The Party further believes that the integrity of the United Kingdom of Great Britain and Northern Ireland (hereinafter “The United Kingdom”) should be maintained.
2.4 In pursuit of these objectives the Party will at all times adhere to the principle of full equality before the law. The Party shall conduct itself and its affairs in such a way that it does not discriminate against or in favour of any person on the grounds of their race, religion, ethnic origin, education, beliefs, sexual orientation, class, social status, sectarianism or any other basis prescribed by law. Further the Party shall at all times adhere to the principles of the rule of law, liberty, democracy and respect for the human rights and the essential, traditional freedoms of the people of the United Kingdom and those under the protection of the United Kingdom.
2.5 The Party is a democratic, libertarian Party and will espouse policies which:
• promote and encourage those who aspire to improve their personal situation and those who seek to be self-reliant, whilst providing protection for those genuinely in need;
• favour the ability of individuals to make decisions in respect of themselves;
• seek to diminish the role of the State;
• lower the burden of taxation on individuals and businesses;
• ensure proper control over the United Kingdom’s borders;
• strengthen and guarantee the essential, traditional freedoms and liberties of all people in the United Kingdom.
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Note that all members sign up to the constitution; those who act in a way which does not accord with the above are swiftly disciplined or ejected from the party. The vast majority of the 35000+ members do so. Those who do not tend to be new arrivals from other political parties in my experience....
For instance the gay weather chappy had been a tory councilor for many years, had been saying the same things, had similar letters published in his local paper and no-one had batted an eyelid.
He joined UKIP and became front page news a few months later, whilst refusing requests to stop doing interviews. He therefore received the coverage he craved.
Meanwhile there are numerous liblabcon members and elected representatives who are ex National Front or BNP members ( both types are explicitly banned from UKIP membership) , paedophiles, thugs and thieves whose crimes go unnoticed by the mainstream press.
As an example 10 out of the 2300 UKIP local election candidates have been expelled from the party for various reasons, whilst a libdem candidate remains despite being prosecuted for assaulting a 7 year old child. Another resigned after sending explicitly racist emails and one of their councilors was convicted of a racially aggravated assault. Of their 56 MPs there is only 7 women and no ethnic minorities. Of those who have been elected as MPs a disturbingly high percentage have either sexual or paedophilic offences to their names in addition to the usual grubby expense and contempt scandals.
If I included labour and tory candidates I could fill pages of barely reported incidents, some of the more extreme are mentioned by Nigel in the link above.
If you want to know who UKIP are then talk to them face to face and make your own minds up.