Parliamentary Voting System and Constituencies Bill

I want to follow on from the point about under-registration. The response to the hon. Member for Croydon Central (Gavin Barwell), whose constituency I know quite well, is that, on average, there are more registered voters in Conservative seats than in Labour seats. The differences referred to are more than explained by that demographic bias. Many Labour seats contain as many people of voting age as Conservative seats. For example, Bradford West has an 18-plus population of 77,848, but the registered electorate is just 62,000. Bermondsey and Old Southwark is a starker example. There, the 18-plus population is more than 101,000, but only 76,000 people are registered. Does my hon. Friend accept that this is systematic bias against poorer people in Labour seats? If we compare the number of seats with the size of the 18-plus population, we see that there is no bias. This is about gerrymandering, not fairness.