London's 10-Day Cat Bond Push Tests Bermuda's 90% ILS Grip

The Bank of England's Prudential Regulation Authority is fast-tracking a 10-day approval target for certain ILS arrangements, a bid for share of the $140 billion catastrophe bond market Bermuda holds with more than 90% of listings.

The target is worth reading against the right benchmark. Bermuda's expedited process for a straightforward special purpose insurer completes in about three business days, so 10 days narrows a gap rather than closing one.

$18B

H1 2026 Cat Bond Issuance

90%+

Bermuda Share of Global ILS Listings

10 Days

PRA's New ILS Approval Target

Key Takeaways

A 10-day target against a three-day Bermuda benchmark, on the one link in the issuance chain either regulator controls.
More than 90% of global ILS listings sit on the Bermuda Stock Exchange, carrying a standing roster of local trustees, administrators, auditors and counsel who bill every deal and every renewal.
83 new transactions in H1 2026, beating the prior half-year record of 72, so even a 10% to 15% London share would be eight to twelve deals a year.
Spreads compressed to 3.74% above expected loss in Q2, tightest since 3.19% in Q1 2023, while property cat rate-on-line fell roughly 16% at mid-year.
12 first-time sponsors debuted in H1, nine of them in Q2 alone, and that cohort is the one with no Bermuda infrastructure to unwind.

The 10-Day Target Against a Three-Day Benchmark

A cat bond issuance is a sequence, and regulatory sign-off is one link in it. Vehicle formation, the offering circular, the collateral trust agreement with the trustee bank, rating agency and modeling firm review of the trigger, and the fronting or ceding reinsurer's paper all run in parallel and largely independent of the supervisor.

Regulatory approval has been the fast part in Bermuda by design. The Bermuda Monetary Authority's expedited route for a bond-issuing restricted special purpose insurer takes an application filed any business day before 5pm local time with no business plan required, just a completed checklist, and market participants describe straightforward approvals completing within three business days.

London's reform genuinely shortens the UK's own authorization queue, which has run weeks rather than days for a first-time applicant working through the FCA and PRA jointly. What it does not touch is everything else: incorporation and governance documentation, collateral and custody arrangements, trigger and modeled loss review, and negotiation of indemnity or parametric language on both sides. Those run on the same clock in Hamilton or London, because sponsors, arrangers, trustees and modeling firms drive them.

So a 10-day sign-off moves the binding constraint to the regulator-independent steps rather than removing it. That is a real improvement and a narrower one than the headline implies.

Two Domiciles, Two Legal Bases for the Same Bond

Bermuda's position is an accumulated service economy, not only a regulatory one. Greg Wojciechowski, president and chief executive of the Bermuda Stock Exchange, put it plainly: "The ecosystem has developed over many, many years, and it simply can't be replicated overnight."

Caroline Wagstaff, chief executive of the London Market Group, frames the imbalance from the other end: "It just feels a little illogical that we've got all this ILS expertise sitting in London and they all go to Bermuda." The structuring, modeling and legal talent pricing a large share of Bermuda deals is already in London. The domicile-linked fee income is not.

The scale is meaningful without being decisive. Artemis counted 83 new 144A and private transactions in H1 2026 against a prior record of 72. A 10% to 15% London share is eight to twelve deals a year, enough to redistribute a fee pool in the tens of millions among a smaller set of London trust banks and counsel, and not enough to threaten Bermuda's position.

The part that reaches an actuary's work is the documentation stack. Two economically identical bonds can carry the same trigger and spread and rest on different insolvency and trust law. A Bermuda vehicle's assets are ring-fenced under the Insurance Act framework the BMA administers directly, stress-tested across two decades of catastrophe losses. A London vehicle sits inside the UK special purpose vehicle regulations under FSMA, which the PRA has operated since 2017 but issued materially fewer vehicles under.

That gap is least visible where it matters most. If a trigger is breached and collateral must be released, the mechanics of release and any dispute over trigger interpretation run through the domicile's courts and insolvency regime. Modeling recoverable timing on a multi-year program therefore means tracking two legal regimes for instruments that price the same, and a program comparison that matches trigger mechanics and spread alone will not surface the difference.

Speed Is a Soft-Market Lever, Which Is Why It Landed Now

In a hard market sponsors tolerate slower issuance because capacity is scarce at any domicile. Reinsurance capital hit a record $790 billion at March 2026 and property catastrophe rate-on-line fell roughly 16% at mid-year. Gallagher Re put July 1 declines at 20% to 25% or more for the best-performing North American accounts, with programs drawing significant excess capacity, against first-half natural catastrophe losses of roughly $38 billion, below the ten-year average.

In that market a cat bond competes for the mandate on execution speed and certainty as much as price, because traditional markets can often quote and bind faster than a full 144A process whatever the domicile. A week or two off the regulatory leg is the difference between a program that competes with a quick traditional placement and one a sponsor reaches for only when traditional capacity is short. The reform is a soft-market share tool, which is why it did not arrive with this urgency in 2022 or 2023.

The issuance record and the falling rates are the same story rather than a contradiction. Q2 issuance passed $11 billion for the first time, up 8% on the prior record near $10.5 billion, across a record 48 transactions, with the outstanding market at $65.6 billion and spreads at 3.74% above expected loss, the tightest since 3.19% in Q1 2023. ILS capital is chasing the same softening cycle traditional reinsurers are, so relative value between the two has stayed roughly stable while both absolute prices fell.

Who actually tests London follows from switching cost. H1 brought 12 first-time sponsors, nine of them in Q2, and a debut issuer without an existing Bermuda relationship, trustee agreements or an internal playbook faces similar fixed costs learning either process. Flood Re's £140 million bond through the London Bridge 2 protected cell is the existing proof point. A repeat issuer faces the opposite arithmetic: re-papering trustee and collateral arrangements that already work, to save days on the one leg that was never the binding constraint.

London's 10-Day Cat Bond Push Tests Bermuda's 90% ILS Grip

Key Takeaways

The 10-Day Target Against a Three-Day Benchmark

Two Domiciles, Two Legal Bases for the Same Bond

Speed Is a Soft-Market Lever, Which Is Why It Landed Now

Further Reading

Sources