....I just think it would be good to be invested locally in a CU also for a variety of reasons, but because CU's are small and local I was just wondering whether it was easy enough to compare them, in terms of services, financial health, rates etc. I'm still surprised there isn't somewhere that does that - even the ILCU perhaps for its members.
Like you, I would love to have access to a service where a simple comparison of CUs was possible.
However, putting aside what would be nice for information purposes, do keep in mind that you cannot join any CU, you must be part of their "common bond" which essentially means you can only join a CU where you live or work etc.