I've been turning both plants regularly since I posted in this thread originally. There hasn't been much noticeable change in the ficus - slow growing at this time of year, so only some slight tilting of leaves for the time being.
Sadly the croton came under attack by spider mites last month, and lost about half its leaves - I'm confident I've eliminated them with washing up liquid, but the plant is looking a bit miserable. Hopefully I've done enough to allow it to recover over time!
