The simple fact is the Green Parties manifesto is a million times more sound complete and workable than the UKIP's:
http://greenparty.org.uk/policies.html
Many very reasonably policies in there that covers most of the important issues. Compare with the UKIP
http://www.ukip.org/issues
where is the education, health, welfare, transport, housing, energy, economy? It is just a mindless, unstructured and repetitive single issue rant about foreigners and the EU with factual errors (e.g, save 55million a day, completely bogus misinformation).
A few tit-bits of general tat to get the Daily mail fan-base salivating. "Scrap HS2" , yeah because that will totally change the economic outcome of the next 20 years.
The UKIP official policy just looks like a practical joke someone played. Mindless, illogical, irrational nonsense. It is hard to comprehend how anyone with half a brain can take them seriously. The Monster Raving loony party seems like a more sensible option with sounder policies!