Thanks, it's a wait and see job for a while then.
Don't think it's too long they have to appeal.
I was surprised that there actually companies who specialise in taking on appeals on behalf of businesses. I guess that's probably when either very large amounts are involved or very large numbers of individuals.
You mentioned you still have the exhausts.
Once the dust settles if it were me I'd let him know they're ready for him to arrange collection.
Let him arrange and pay for the return.
You've already done it once at your expense.