Any - V5C - slippy118

Is there any problem with giving a prospective purchaser the document reference number. They reckon they need it to check the road tax. I know they dont, but want to keep them happy, unless it's a problem.

Any - V5C - Robert J.
Sounds dodgy to me. Wouldn't they need to tax it themselves anyway, regardless of its current status? My concern would be, are they intending to contact dvla and obtain a replacement V5 for some reason? This road tax thing is clearly a lie, I would proceed with caution.
Any - V5C - Simon

It sounds dodgy to me, probably after the V5 reference number so they can forge a perfect copy of the V5 for a stolen cloned car that they are making with the same identity as yours.

Are we talking abot a high value/desirable car here?

Personally I won't give them any information.

Any - V5C - ExA35Owner

You can check tax online with the reg number alone. No need for V5C. However prospective buyer would need to see the V5 in detail if he/she were a serious prospect. Would also want to see evidence of ownership as opposed to keepership - V5C doesn't guarantee ownership.