Insurance – Reinsurance. The doctrine of good faith required the reinsurance claims to be presented on a basis which apportioned the respondent insurer's ultimate net loss between each policy year in respect of which the insurer was liable to indemnify the insured employer for the damage caused to a victim by mesothelioma. Accordingly, the Court of Appeal, Civil Division, allowed the appellant reinsurer's appeal against the arbitrator's decision that an insurer which settled a claim for liability for mesothelioma arising under EL insurance policies which spanned several years of exposure to asbestos, could claim an indemnity for its full loss under which ever annual reinsurance within that period it chose in order to maximise its reinsurance recovery.