As to putting my CX on SORN, it is not clear from the inquiries I have made on the web what refund/allowance is made in respect of the £500 p.a. surcharge which I paid when renewing the road fund licence either proportionally or otherwise
As insurance my inquiries reveal that during a SORN it is possible to obtain a reduction in the premium if the cover for use on the highway is removed from the policy.
Obviously anyone applying for a SORN will need to make there own inquiries in relation to these two matters.