According to the 2019 edition of Andrew Lea's book (P61) the EU limit is 200ppm. However there is also a Q&A type forum attached to his web site cider.org.uk so you could ask there, but I don't know how a new person gets on it now... it used to be via google groups but I think that has changed. Sometimes you will find both Andrew Lea and Claude Jolicoeur chiming in to address fairly technical issues.
I just tried scratching around on the internet and found if I google "cider.org.uk forums" then "cider workshops-google groups" comes up under "groups.google.com>cider-workshop". Clicking on this goes to the forum I mentioned above. Hope this helps!