He reminds me of Mussolini. People forget to begin with Mussolini was a very popular leader in Italy and with other countries before he decided to invade Ethiopia (thinking he was just copying Britain and France but acting horrifically by any moral standards). By the end he was a nasty piece of work quite clearly.
Although the Greens and UKIP may manage to gain a significant percentage of the vote they will probably struggle to get te concentrated enough in individual constituencies for them to actually gain many seats in a FPTP election.
UKIP have some chance in East Anglia, Essex, Kent and Lincolnshire with an outside bet in parts of Yorkshire, the deep South West and either side of the Welsh border. But to even reach double figures would take much more than current performances