Anybody see BBC's Countryfile on Sunday? It's still available on BBC iPlayer and will be re-broadcast Friday, 10th July at 1:25am, BBC One.

They had an item on climate-change and its effect on what kind of fruit and veg might be growable in the UK sometime soon. Already, from only a handful a few years back, there are now scores of vineyards and winemakers across the country.

In passing, they mentioned that several things we regard as essentially native are in fact relatively recent introductions. Apples and pears, far from originating in the East End of London, came from Persia. The familiar orange carrot is a later variant - the original purple variety came from Turkey. Swedes - what can I tell you? And as for the potato - well, you've had your chips!

Ross