Definitely not too old mate. I started my career change at 32 and have not looked back since.
I have been lucky though as I was able to get hands on experience before making my decision to start the course AND I managed to keep working for a lot of the time whilst studying.
You will meet A LOT of people who will try to put you off or say bad things about you doing it through the channels available... IGNORE THEM! If it's what you really want to do now then do it and don't delay it any further!
You will need to sift through all the companies/colleges offering routes and choose the right one that suits your needs. It will not be cheap!
If you're lucky you may get a college position, if that is something you can consider? I wish it was the route I could have taken.
Remember, at the end of all your mind blowing studying and endless payments that lighten your wallet you will then be entering a trade where there is little work, you may not make any friends along the way but things have to get better eventually.
I love doing what I am doing now and despite work being slow I don't regret making my decision to go for it.
Think hard, work hard, play harder and stick your fingers up to ANYONE that chooses to work against you
Good Luck :thumbsup