I grew up and live in in the north of England and here a turnip is a large red-brown root vegetable with a yellow/white inside. Swedes are small, pale fellers. I know that in the south of England the names are the other way around. Now our new Tescos is carrying out some blatant vegetable imperialism by calling good northern turnips blinking swedes. Outrageous!
So that I can build what may well be the first (and I imagine the last) 'Mumsnet Turnip Map of the UK' and discover at what point on the M1 a turnip warps into a swede, please name your location and tell me what you call the "large red-brown root vegetable with a yellow/white inside". Do not let your supermarket's labelling influence you - go with your what your mother taught you.
I'm ashamed to say that this has been bothering me for years days.