Leahs pretty good and says it most of the time unprompted, but will say it straight away if I have to remind her. Also if she is trying to give me something and i'm not paying attention I hear "thank you Leah" and she is reminding me to say thank you to her for whatever she was doing....very cute.

yep I agree with Rach&Jack, you cant force her to say anything, all you can do is role model the behaviour ie: when you give her something say "thanks mum" or the good old "what do you say?".  We did this with Leo and most of the time he does it unprompted now, problem is he now thinks if he says please and bats his eyelashes he can get anything he wants lol.  Good luck Fiona, sounds like you have one determined wee girl there!!

Ella is like Tom and says Ta when she wants something or instead of saying thank you.  She does think that just because she says Ta it means she can have whatever she wants through

Tom has started to say Ta.....sometimes unprompted which really impresses me...but he has also worked out that "Ta" might just get what you want so he says it when he wants somethign too.  I am working on please, sounds like "cheese" so I let him off if he says "cheese".  Like you, I noticed he can say it when he isnt wanting something and its just copying a word but if he has to say it he WONT!!!

One thing I thought of is do we ALWAYS say please and thankyou with them and with others?  I know I dont and I have to make an effort or how can I expect him to.

Bottom line...2 is not too young....just dont expect it everytime and give lots of praise when she does.