Hi Ben, here are some Willi Betz trucks i saw this week for you. Apologies for the quality they were taken on my phone at maximun zoom.
This is Bulgarian registered merc pulling a fridge seen at Thurrock services on Saturday morning (30/04/05)
This is a Russian registered merc pulling a tilt seen at the same place.
Another Russian registered seen at Toddington service on Friday morning (29/04/05)
This is a Russian and Bulgarian mercs pulling fridges at Thurrock on Saturday morning (30/04/05)
Will try and get more as and when 
can you favour for me if u seen betz trucks parking again so can you take pic betz truck front - side with show serial number, i try get all serial number collections truck photos 
cheers