Any good toilet training methods for my 3 year old boy? He knows how to tell us if he wants to pee, but when it comes to pooing, he will hide and poo, then tell me with a 'sorry mummy, I pooed'...

I think you may need to find out what is holding him back when it comes to pooing. I'm guessing he may have some fears or concerns. Worried about falling in, or scared of the sound of the flush (if you are using regular toilet bowls)? Here is an article that you may find helpful: http://www.whattoexpect.com/toddler/behavior/potty-training-problem-refusing-to-poop.aspx Good luck there!!