Esterel 24SLs were only built on Mercedes Sprinter chassis the earlier models were Mercedes or Fiat I think. I had a look at the rear of the nearside headlight and couldn't see any lever but I'll have another look tomorrow. I would have to remove the cooling system expansion bottle to see behind the offside light.
I thought they were standard Sprinter ones until I had a Sprinter alongside, the Esterels although similar to look at are quite a bit smaller. Beam benders would be good but the DVLA or VCA documents I received don't mention a 2012 cut off. I'll check it out thanks. I've contacted Rapido Motorhomes in France to see if they can help. The motorhome in my avitar was written off in March in Spain by a lady driving on the wrong side of the road hence the reason we bought the Esterel, it took my insurance company 7 months to pay out.
Search the forum for imports I'm sure there are a few members who have imported older Motorhomes in the last couple of years. If you click the "more" button at the bottom of the search pop up you can do an advanced search.