Deadlocks and hasp locks are great but you may also need a Van alarm & Tracker

www.vanolarm.co.uk . Its a sad fact that the more locks we add the more ways thieves will find ways to get around them. Vanolarm is one of the only combines Smart Van alarm, Tracker & siren units that can be self installed in only 10mins. It alert the owner via their phone the moment the van door handles are pulled, locks tampered with or forces entry attempted. It also sounds its 113db siren whist ensuring the van can be tracked should the thief persist. See more here at https://vanolarm.co.uk