If it’s leased it’s fairly unlikely it’s registered to your work, the lease company is almost certainly (invariably) the registered keeper, if in doubt get out the V5c registration document that is sent to the registered keeper and check the details on it are correct.
Perhaps phone the lease company and ask them, also ask if they got a NIP and replied to it naming you/the company and if so what details exactly they gave.
An MS90 is an endorsement code that insurers love to have to just accepting 6 points may be a bit premature as the fine may be the least of the costs.
Your right, sorry I didn't make it clear. The lese company is the registered keeper, I don't have the log book. The lease company do not have my personal name or address on their system. The police haven't contacted them they have decided to go straight to the insurance policy holder which is myself. My guess is they have looked at registered keeper and insurance and assumed its a personal lease to myself and wrote to me.
The other vans on lease from the same lease company - we receive the NIPs direct to the office , as they first write to lease company, they get forwarded to limited company and then we pass them onto the driver. These vans are on a commercial fleet insurance policy.