Geraint Day:

Absolutely. The figure of 7.5% that has been suggested would help. I think it would still leave challenges, but it would certainly reduce the negative impact of the suggestion.

This is not just about the south Wales valleys, although it is interesting that in the last review, the first proposal from the Boundary Commission about the Rhondda constituency was to include part of Cynon Valley in it. To get there, you have to cross over the Rhigos mountain, which features heavily on winter travel reports on Radio Wales when the mountain road is closed because of bad weather. That is a common occurrence in Wales, due to its geography, and not just south Wales; it happens even more in the north, where you have the mountain ranges of Snowdonia and the Clwydian hills. They are big barriers to building constituencies, and taking a ward on the other side of a mountain away from its natural community has a big impact and is very unpopular with the local electorate.

A larger variance—7.5%, or something akin to it—would allow greater flexibility for the Boundary Commission. It must be said that the commission generally does a good job and is very open to other suggestions, but has its hands tied by the 5% rule. Giving it extra freedom to determine the best fit is a very sensible suggestion.