VCM22200 - EIS: deferral relief: shares issued before 6 April 1998: procedure for claims: postponement application
If the CG arises in a tax year preceding the tax year in which the shares are issued, you cannot give deferral relief immediately. For years before SA, you can accept the appropriate postponement application but you must point out the normal interest provisions will apply if it turns out no relief is due.
Under SA, there is no provision for a postponement application in any circumstances. A claim can only be submitted after the shares have been issued.