Shetland, Orkney (and Canvey)
Conversation around Dr B. desk at work:
A: 'So we are going to a wedding in Scotland, and my fiancé is going to wear a kilt with his family's tartan.'
B: 'Oh, what's the pattern like?'
A: 'Sort of black and red lines over a cream and white background.'
B: 'Ah, the McChav clan!'