Crown Gall on apple tree?

Hi
I’ve an old apple tree which has started producing nodules on most of its branches. I’ve tried to search online and the most likely culprit seems to be Crown Gall. What do you think? And if it is what do I need to do?
All help will be much appreciated.
All the best!
Eddie

 

Has it been infested with Wooly Aphids (as they can produce galls)?

@HarmonyArb might be the person to answer this one.

 

Hi thanks
I’ve checked for woolly Aphids and none are there.