There are of course different ways of classifying sitcoms - according to age, perceived quality, etc. However, apart from those very obvious attributes, what would the main types of sitcoms be? And has the dominant 'type' changed over time. I'm interested in UK sitcoms not US ones.
I was thinking maybe you could make a table (not a one you sit at - the other sort) showing which characteristics different sitcoms have to indicate their type.