I just can't find much information on the subject. the NTTA say about the length of a 3.5 tonne mtorhome and whatever it tows not exceeding 7 mtrs, but our motorhome is 7.5 tonne and it didnt make much sense to me.
Not such a simple answer as yes or no BUT in general -
If the combined weight of the loaded caravan and motorhome falls within the Gross train weight (GTW) stamped on your motorhome weight plate - yes!
If the combined weight of your rig weighs more than the GTW stamped on your motorhome - then No. (The Brakes are only designed to cope with the Gross Train Weight - anything heavier and your brakes will not be strong enough to stop you)
If the weight of the caravan exceeds 750 Kg and you have an E licence, for example, (C + E or a C1 + E or a B + E providing your outfit does not exceed 8¾ ton in the case of a B+E - then Yes.
If the weight of your caravan exceeds 750Kg and you do not have an E Licence - then NO.
When we were in Spain in May, we talked to a British couple who towed a caravan behind their Autocruise Stargazer! We asked them why and they said a friend was joining them for a couple of weeks and the Stargazer was only a 2 berth!!
You must also ask yourself is the motorhome capable of having a towbar fitted.
believe it or not there was one motorhome at the earlier NEC show that had no chassis behind the rear wheels. The whole structure was supported by the sandwich floor. Others have a rear overhang longer than the chassis extensions so fitting a towbar would be very difficult.
Best to research it very carefully.
1. Can I drive it
2. Can I have a towbar fitted
3. Will the outfit exceed the Gross Train Weight for the MH
4. Where will I be able to go with such a huge outfit
5. Will I have to pay for two pitches whilst on site
6. What will the performance of the outfit be like, can I go up any serious hills
7. Can I afford the fuel at such a low mpg.
8. Parking off site will be almost impossible, even in supermarket car parks.
Sorry to be pessimistic but it's better to be safe than sorry.