am new to forum, I currently use mainstream sites like betfair but as looking to gamble my bitcoins but wondered if dice sites etc need a licensee, and should I steer clear of ones that don't?
There are no specific laws relating to gambling with bitcoin. As such we assume that gambling with bitcoins falls in the same legal category as gambling with government currency. If online gambling with your local currency is legal where you are then online gambling with bitcoins is also legal where you are. If online gambling is illegal where you are gambling with bitcoins has the benefit of being anonymous. The laws and legal systems exist to serve the state and no one else, there is no moral obligation to comply and I recommend you mostly ignore them as they are a hindrance.