nope
You may defend together but never attack since the UK ships are not “placed on the battleboard” they can take no hits.
Can land units attack sea units?
Can Destroyers attack land units?
If you attack units in an adjacent sea zone to an hostile occupied territory, can the land/air units attack the sea units?
1. Never
2. Only with Consolidated Bombardment, and then only one shot with each amphibious landing
3. Never.
thanks