Claim Court Fee

steampowered

Sue the roofer personally.

If the company did not exist when he did the work, clearly your contract could not have been with that company.

[Deleted User]

You really do need a report though. You have to prove the work is the cause of the further damage to your roof. You probably need to prove the timbers that are now damp were put in place by him or undamaged before the work was carried out. So a breakdown of the work he did would be useful.

steampowered

It is possible to arrange the report after legal proceedings have started.

In fact this is what the civil procedure rules say you should do, since technically speaking you need the court's permission to use a report and you only get this permission after the claim and defence have been filed.

There is a reasonable chance the defendant won't submit a defence, in which case the claimant gets default judgment and no report is necessary.

Op if you want to go ahead with court proceedings, I'd just go ahead and issue the claim as soon as possible.