The first healthy eating program is nu shape. This business is family owned offer many years they specialise in cooking low fat and healthy meals and home deliver them. I think is a great way to lose weight, but might not be the most affordable. My suggestion would be to order 2-3 nu shape meals a week in case of a late night out or if your tired and cant be bothered to cook. this way you avoid buying take away if you get lazy.
Nu shape-
http://www.nushape.com.au/

Jenny Craig-
http://www.jennycraig.com.au

Weight watchers-
http://www.weightwatchers.com.au/plan/index.

Tony Ferguson-
http://www.tonyferguson.com/