CG66020 | Losses: loans to traders: payments under guarantee: claims
From HM Revenue & Customs · Capital Gains Manual
A claim for relief under TCGA92/S253 (4) must be made by the guarantor; in practice, any clear indication by the guarantor or his agent that relief is sought in respect of a specific payment should be accepted as a valid notice of claim. On receipt of the claim you will need to check whether the conditions at CG65991 - CG65993 are met by reference to the circumstances prevailing at the time the guarantee payment was made. If they are,