One of the many problems with trailers -- in addition to the licensing and insurance
problems for young people -- is that they don't function very well in the inner city.
They're fine if the venue is a big country house hotel with lots of parking space. But
trying to park a trailer near an inner city pub that has none of its own parking spaces is
a nightmare (not that a big van is that easy either). And reversing with a trailer is
difficult, especially if you're stuck down an narrow back lane. (Although you can always
just unhook a trailer and push it -- I was always surprised at how easy it was for me to
push and manoeuvre my large box trailer even when loaded up with tons of heavy gear).