UCI licence is about €112 per annum.
Includes insurance and private hospitalisation if necessary.
Can be bought at most bike shops.
Well worth the investment.
Ride discipline is important for the safety of the group and any other road users that you come into contact with. It is also useful for protecting your bank balance.
Links that may be of interest
Granny Annie Rides PBP:
My Cycling Journey From Age 2 to 62
The Kindle and paperback versions of my book are now available on Amazon.