The inner workings of the infamous "unruly" travelling family have been revealed through their deportation documents.

The British clan that made international headlines spoke a mysterious language that officials didn't recognise and used their children as "tools" in their alleged scams, according to Immigration New Zealand documents released to Stuff under the Official Information Act.

Police talking to the family at a Burger King in Hamilton. Credit:Tom Lee/Stuff.co.nz

After being accused of trashing a Takapuna beach and "rude" antics at an Auckland hotel and cafe in January, five members of the clan were issued deportation liability notices at Burger King in Hamilton.

Documents show the drama at the fast food joint began with complaints of "a Scottish family" being rude to customers and deliberately spilling drinks on their food before asking for a refund. Children yelled "obscenities" into the drive-through speaker box and the whole group walked away when police turned up at the restaurant.