Peter Stokes, from the Office for National Statistics, says changing numbers of Welsh speakers in different parts of the country can partly be explained by migration within Wales.
More top news
An overcast and damp start for most. By lunchtime it should be mostly dry but the skies will stay largely cloudy.
A full-time carer from Port Talbot is celebrating after winning £1m on the EuroMillions.
Kane Wannell jailed for holding up a Post Office with a fake gun and pointing it at the owner and customer.