I was looking for classic car insurance this year but I had no luck.
Basically, the golf MK1 has to be a second car and you cannot share the no-claims bonus. So I would have to start from scrath resulting in a premium in excess of £1000 for classic car insurance even though I had 3-years no-claims on my MK3. Also, the MK1 has to be garaged, cat-1 alarm, supply photos and a car valuation.
I have also found that insurance companies dont like parent-child policies.
Go to norwich-union they do a pay-as-you-go insurance for 19-21 years old. Might work out cheaper.
Since I never had a second car with no-claims bonus I ended up insuring the MK1 using a normal fully-comp policy. Good luck. Let me know how it goes.............