Hi Charlie,
Welcome to the forum.
In answer to your question, this is what I found on the forest research website :-
Spread of chalara ash dieback in wood is considered to be a low risk, so ash wood from infected as well as uninfected sites may continue to be moved without restriction within Great Britain (England, Scotland and Wales).
However, we strongly recommend the simple precaution of brushing leaf and shoot material from logs, firewood and vehicles before they leave the site. This is a precaution against the possibility that the disease might be present, but not obviously apparent, and could be spread unintentionally with logs and firewood.