Livre d'Or

Yes, it's much better to stay on the outside of a row of parked cars than repeatedly ducking in and out.

If there is only space for one-way traffic and there is traffic attempting to come the other way it is polite to sometimes tuck in to the row of parked cars and allow the oncoming traffic through, but you aren't required to do that (you'd probably do the same in a car, if you could, sometimes but not every time someone was waiting for you). Be aware that in Cambridge some motorists will persist in believing that such narrow gaps between parked cars contain enough space to pass cyclists (they usually don't) and leave a big gap between yourself and the cars on either side to reinforce the lack of available space or you will be being squashed between a parked car and a moving one (and in any case leave space, people open car doors).