An update...
I did actually contact EE about this in the end as I needed to speak to them about some discrepancies with the bill.
They took it really seriously and forwarded it to Open Reach's insurers - a little bit extreme but there we go. The insurers have asked me to complete a form but it asks if I have already got quotes. I can't really go and get quotes for something like this as it is not the biggest disaster in the world, so I am not really sure what to go back to them with as this is not really something I would need to get a building company in to resolve. Just the cost of materials should do the job.