Just to warn everyone - they advertise on Yahoo - 7.95 for a free trial, but then re-debit you - I have just had £119 taken form my bank account unauthorsied. Spoke to the Bank - they are aware of this company but cannot do anything to stop them taking more other than cancelling my debit card - which I have just done - not convenient... Needless to say their phones do not pick up 
So beware...
Googled them and found they had a similar scam with Acai berries