Lloyd's capital material sets out a detailed loss-ratio change bridge for capital setting. The discipline matters because an actuarial assumption is rarely changed for one reason. Price, inflation, mix, new business, uncertainty loadings, reinsurance and plan choices can all move the expected ratio.
A bridge that can be challenged
Begin with the prior approved ratio. Show the removal of prior uplift, deviations from plan, unreported-loss and risk-adjustment components, new-business effects, inflation, mix, the updated plan and any new uplift. Each step should have an owner, evidence and a clear sign convention.
The bridge should reconcile to the model output, not merely to a presentation total. If an actuary's model pick diverges from the business plan because the market is softening, that divergence is useful information. It identifies where commercial ambition and risk evidence are making different statements.
Uncertainty deserves its own line
Model uncertainty should not be hidden in a generic margin. The analysis should distinguish uncertainty in the mean, uncertainty in volatility and uncertainty arising from structural change. A soft market can increase the uncertainty of future profitability even when recent experience looks benign.
Decision use
Boards can use the bridge to challenge whether capital is supporting a planned underwriting strategy or compensating for an unexplained assumption. It also creates a repeatable audit trail for the next capital cycle. Source: Lloyd's Capital Briefing 2026.