Originally Posted by
psychopompos
If you're feeling very adventurous and want to save a few pounds, and happen to have a Drive Now and Zipcar subscriptions you could take a Drive Now from LCY to somewhere in Hackney/Islington/Tower Hamlets where you can swap it for a zipcar which you can then leave at T5 SS. That exercise should come up somewhere in the £30-40 range.
For a variation on this theme, the DLR to e.g. Blackwall or Poplar followed by a ZipCar Flex to T5 might be easier than getting two separate car club cars.