Sure, if you live in Zone 2, or live near a tube station and are travelling radially.
If you live further out, getting home at night can be a multi-bus, multi-hour affair. And if you're not going in or out of zone 1, the odds of their being a convenient bus route is slim, and again, diminishes the further out you get.
If you live further out, getting home at night can be a multi-bus, multi-hour affair. And if you're not going in or out of zone 1, the odds of their being a convenient bus route is slim, and again, diminishes the further out you get.