Send what you have. The more Roger can see at the outset, the faster he can tell you whether mediation will work here, what it will cost, and how quickly a date can be found.
What happens when you press send. Your papers go straight into secure storage. Roger runs the conflict check at the same time — across both his practices, mediation and his separate expert witness work. He does not open the papers until that check has cleared, so sending them early cannot prejudice you or the other side.
If a conflict shows up, the papers are deleted unread and you are told in writing that they have been. Nothing is retained and nothing is passed on.
If it clears, and it almost always does, Roger comes back with a scope, a fee proposal and a mediation agreement — having already read the file, not having asked you to send it twice.
He can tell you whether the dispute is one mediation is likely to settle, what format and length would suit it, what it will cost, and how quickly a date can be found. That is the part most people want and rarely get up front.
A mediator is a neutral facilitator, not an adviser to either side. Nothing here is legal advice, and no mediator–party relationship arises until a mediation agreement is signed by all parties.
Roger runs a civil and commercial mediation practice and a separate vehicle engineering expert witness practice, and he knows the mediators who cover what he does not. If your dispute needs a different specialism, or a panel appointment, he will say so and, with your agreement, introduce you to somebody who does it properly. You are not sent away empty-handed.