This can be a very distressing time, and your insurer will work with you to try and get your vehicle back as soon as possible. You'll need to provide a full list of all the items which were inside the vehicle at the time of the theft, as well as any receipts or proof of ownership, etcetera. If your van is found after being reported as stolen, make sure you contact the police immediately and don't try to recover it yourself – this could lead to criminal charges!