Some information on shared ownership
Links to some more Reading. Some pieces are quite old
The history of narrow boat shared ownership can be read here
A share of your own (2010 Waterways World following the collapse of Challenger and OwnerShips).
Share and Share Alike from 2007 (somewhat dated especially as the writer took a share with OwnerShips but worth a read to get a flavour of what to look for and ask. Part ONE and Part TWO are here.
A boat on the Midi concerns shared ownership in France. Part ONE and Part TWO are here.
A list of compaines managing boats can be found here
One of 44 shares sold in 2015
One of 41 shares sold in 2016
One of 49 shares sold in 2017
several sold already in 2018