Until we introduced STV, we normally had a system whereby each councillor would have a relatively small ward to cover, unless you were in one of the rural areas, like the Highlands, or Argyll and Bute, and the islands, where you might cover a very large geographic area. But your constituency in terms of electors wouldn't be huge. So moving from that, with a very clear link between the constituency and the councillor—the ward and the councillor—to something where there was less of a link, it was clear to the politicians that to get to something that was very proportional would have created wards that were too big, unwieldy, and unmanageable for a councillor who doesn't have an enormous support system behind him or her.
So they restricted it to three or four members. All wards are either three-member or four-member wards, which means that they're not as proportional as they might be if you'd gone to six, seven, or eight—but they're much more proportional than something that's just one to one. The wards end up not being too unmanageable, and it has worked relatively well. The members in a ward are encouraged to act together, to signpost constituents, or to each other, if they're going on holiday, for example, or if they're off sick. They're encouraged to do that. They don't all do that, but there are a fair number of them who do.