I've been looking up flights and it turns out one of the connections works
nicely via London City. Can anyone recommend a sensible way to get there
from Cambridge? Previously there was an express bus from Liverpool St, but
that went when the DLR extension was built.

National Express to Stratford then DLR is the obvious one looking at a map,
but it appears that involves a change at Poplar (or Jubilee to Canning
Town). NatEx's southbound stop at Stratford wasn't ideally placed for the
station (though I've no idea if the Olympic works have moved things about).

I would have (quite a lot of) luggage, so non-traipsing options would be
appreciated. I've walked from Liv St to Bank a fair bit to make onward
connections from there, but it's not something I'd want to do with luggage.

Any suggestions?

Thanks
Theo