Thought it would be something like that.
My advice would be to insure the galaxy with your full NCB then insure the golf on a classic policy, HIC or A-plan do classic insurance on these because they're over 15 years old. Usually limited to 7-8k miles per year.
I got a quote of about £200 on a second classic car with 0 ncb.
Give it a go, you'll be surprised i think.