So because this gets asked so often, I wanted to put it up as a request to Crowdcube as a platform (Yes, that's a thing here). Basically, If you'd like to see Crowdcube Implement a secondary market please like this post - the like will count as a vote. Hopefully, over time, it can demonstrate demand to them and facilitate a response.
I rarely use secondary markets on ECF platforms because of the information problem (seller always knows more than buyer, unless buyer is a shareholder too) and lack of EIS relief, but appreciate it's a powerful tool.
Also, 'what company would you buy (or sell) on Crowdcube's secondary market' thread, anyone??
-If you're asking me, it'd be Adzuna, Farmdrop and Fingopay off the top of my head.