As an example only, you might wish to choose something along these lines:
http://www.ebay.co.uk/itm/150W-Solar-Panel-Mono-12V-Kit-Full-Mounting-Brackets-for-Caravans-Boat-Motorhome-/292036737063?var=&hash=item43febef827:m:mV19ecKdlwqP6bJa4zlGHTw
As we don't go off EHU, I chose a 100w panel, but those who do may select larger wattage panel(s). The black controller in the image is the exact one I have, which has been in over 12 months now with no issues. However, others do advocate a more sophisticated control panel.
Personally I would select a kit with 6 brackets, being 4 corner and 2 side, to minimise panel flex on the move, and provide maximum bonding area to the roof. Don't buy a 4 corner kit then try to buy the side brackets later, as they may not have the same height (I know this!). The advantage of a kit is that you get all the correct cable (and plenty of it) and waterproof connectors