Unless financial settlement proceedings were started before remarriage, I am afraid it seems very likely that he will not be able to seek financial remedy. It is open to his ex to do so if she has not remarried. Even if she has, if she ticked the right boxes on the divorce petition, she will be deemed to have made a financial application.
Pensions are excluded from this. It would be usual for any pension sharing order to be based on a 50:50 share of pension assets accrued during the marriage. His ill health may be a factor but her behaviour is unlikely to be.
If there is any jointly owned property, this may be dealt with under property law.