The banana plant in Broomfield Conservatory has had a big bunch of fruit hanging from it for several months. The bananas have grown steadily larger, but stayed green, until a week or two ago. Now they are begining to ripen, as you can see from this photo.
So get round to the Conservatory while they're still there!
Broomfield Conservatory is maintained by volunteers and is open on Wednesdays and Sundays from 2pm to 4pm.