How does Brexit affect the pound?

During the past two years, the pound has had a rough time of things when it comes to its price against the dollar and other currencies.

The immediate aftermath of the Brexit referendum saw sterling decline sharply in value.

And as the vote on the UK's withdrawal deal from the European Union looms, further volatility is expected.

Since June 2016, holidays and imported goods have become more expensive, but UK exports have been cheaper.

It's a complex picture, though.

Exporters, such as carmakers, are importers themselves, buying in raw materials such as oil or copper.

While Britons living abroad but drawing a UK pension have suffered as the pound has declined.

Why does the pound move?

Since 1992, the pound has floated freely on currency markets, meaning that traders - buyers and sellers - determine what it's worth.

When the pound rises in value, more of the currency is being bought. When it goes down, more is sold.