Our caravan expert speaks to Gary Webb at SH Caravans, an approved workshop based near Colchester, about what is required to service a caravan to the correct level. Our caravan expert also offers advice on the right insurance for you.Our caravan expert speaks to Gary Webb at SH Caravans, an approved workshop based near Colchester, about what is required to service a caravan to the correct level. Our caravan expert also offers advice on the right insurance for you.