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UK Financial Sector Faces Slow Progress on Next-Generation Settlement System

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  //business-finance.news-articles.net/content/202 .. ogress-on-next-generation-settlement-system.html
  Published in Business and Finance on Tuesday, November 25th 2025 at 6:04 GMT by reuters.com

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UK financial sector makes slow progress on preparations for new settlement system – Reuters (25 Nov 2025)

The UK’s financial markets are in the midst of a major infrastructure overhaul, with the government and market regulators racing to bring the next‑generation settlement system into operation. Reuters’ November 25th piece tracks how progress has been uneven, highlighting the key players, regulatory hurdles, and technical challenges that are slowing the rollout.

1. Why a new settlement system matters

The UK’s current settlement infrastructure, dubbed “S1,” has operated on a T+3 cycle for most equity trades and T+1 for bonds. While adequate for a few decades, the older platform is increasingly seen as a bottleneck that heightens settlement risk, slows market liquidity, and hampers the country’s ability to compete with the EU’s faster TARGET2‑Securities (T2S) system.

The forthcoming “S2” settlement platform aims to: - Reduce settlement times from days to real‑time (T+0) for most securities. - Tighten risk controls by incorporating continuous monitoring and automated fail‑safe mechanisms. - Offer a more resilient, scalable foundation that can support the next wave of digital finance products.

By moving to a real‑time, real‑gross settlement architecture, the UK intends to cut the exposure of market participants to settlement‑related default risk and bring domestic processes in line with global best practice.

2. The key stakeholders

The project is a joint venture among several entities:

These groups collaborate under a steering committee that meets quarterly to review progress, resolve disputes, and adjust the technical roadmap.

3. Where we stand – The slow‑pacing roll‑out

3.1 Technical complexity

S2 is being built as a cloud‑native platform, which introduces significant integration challenges. Legacy systems across banks and custodians need to interface with new APIs, messaging formats, and settlement logic. The BoE’s testing phase revealed that more than 30% of participant‑supplied code snippets required rewrites to meet the new standards.

3.2 Funding and cost overruns

The Treasury had earmarked £500 million for the initial build, but a cost‑benefit review in March 2025 flagged potential overruns of up to 15%. To offset this, the government earmarked an additional £150 million for “technology refresh” projects that will help participants modernise their own systems.

3.3 Regulatory alignment

While the FCA has largely green‑lit the architecture, a recent FCA‑led consultation uncovered concerns over data privacy and cybersecurity that must be addressed before the system can go live. As a result, the implementation timeline has been pushed back by six months.

3.4 Market participant readiness

According to a BoE‑commissioned survey, only 42% of large asset managers have a fully mapped migration plan. Smaller banks lag further behind, citing limited IT budgets and a shortage of skilled personnel. The FCA is therefore encouraging “participation incentives” such as preferential access to the settlement platform’s performance monitoring tools for early adopters.

4. The road ahead – Key milestones

The BoE has warned that “the margin for error is slim” and that any further delays could jeopardise the UK’s competitive edge in the global securities market.

5. The broader context

The S2 settlement system is part of the UK’s post‑Brexit strategy to maintain an independent, world‑class financial infrastructure. In late 2024, the Treasury announced a new “Financial Markets Modernisation Programme” that includes investment in fintech, open‑banking APIs, and cross‑border interoperability.

Internationally, the S2 platform will interoperate with T2S, enabling UK‑listed securities to settle with EU counterparties without the current “settlement‑to‑settlement” friction. This interoperability is expected to unlock new capital‑raising avenues for UK companies and reduce transaction costs for cross‑border investors.

6. Take‑away

Reuters’ article paints a sober picture: the UK’s next‑generation settlement system is still very much in the works, with significant hurdles ahead. While the strategic benefits of real‑time, low‑risk settlement are clear, the technical, financial, and regulatory challenges have slowed momentum. The sector’s success hinges on coordinated effort among regulators, central banks, market infrastructure providers, and, most critically, the market participants who must commit to upgrading their own systems.

If the UK can pull together and deliver on the revised timeline, the S2 settlement platform could solidify the country’s position as a leading global financial hub. Conversely, continued delays risk ceding ground to rivals that have already embraced faster settlement frameworks. The next few months will be decisive in determining whether the UK’s “S2” will deliver on its promise or become another case study in infrastructure missteps.