The trade have alerted ATG to the latest scam guide trying to con dealers into paying thousands of pounds for useless advertising.

Readers will know that this problem goes back more than a decade, but the most recent perpetrators, Expo Guide, who are registered in Mexico but issue reply-paid envelopes for order forms with an address in France, are targeting exhibitors at the Antiques For Everyone Spring fair at the NEC in Birmingham.

The small print on what, at a cursory glance, appears to be a form for dealers to confirm their details for a free listing, reveals that signing it will commit them to a large bill, initially €1271.

Even where victims have cancelled repeat orders well before the deadline, they have received ongoing bills and threats of legal action for non-payment.