What MOT class

Can someone confirm what class a Warwick XL falls into for MOT testing. I dont know if its a common issue, but on a few occasions a garage or web site asks for the van registration to help identify my vehicle, I get a bemused look as no results are found against the registration.  Contacted a local garage today to arrange service and MOT and they suggested I look at the previous  MOT certificate to confirm vehicle class. Looked  at last years MOT certificate which was its first one done at main dealer. Under the heading Make and model it just says Unknown. Have A/S not correctly completed the paper work or is this common to all our vehicles.

Class 4 same as cars. Make sure mot station has ramp long enough, my usual car station couldn't do my Duo as couldn't slide the jack back far enough to raise rear axle so had to find a different  testing station.

Also check that the garage has enough head room also to lift the van on the ramp

Check the reg no. on the DVLA tax database as that will provide some of the details that are logged for the vehicle.