The UK defined contribution market is entering a critical phase. Consolidation is accelerating, master trusts are absorbing smaller schemes, and policymakers are increasingly framing one idea: that scale is the defining test of success. Bigger, it is implied, is better. Yet this fixation on size risks hard-wiring the wrong incentives into the system and losing sight of the outcome that matters: how much members have to spend in retirement.
Policy frameworks increasingly treat scale as a proxy for resilience, quality and value. Under the value-for-money framework, smaller schemes that struggle to demonstrate competitive charges or performance are expected to consolidate or exit. In principle, this is hard to argue with. Poor outcomes should not be protected by inertia. But the problem is not consolidation itself; it is the assumption that size alone is the answer.
Scale is not an outcome, it is an input, and elevating it to a primary test of viability is an error. Assets under management can provide advantages. Larger schemes may be able to negotiate lower fees, access certain asset classes, including private markets, and invest more in governance and operational infrastructure. These are useful tools, but they cannot guarantee what matters most to savers: stronger net investment outcomes over time. Judging a scheme primarily by how large it is, rather than by what it delivers, confuses means with ends.
If size were the primary factor, default fund performance across the market would consistently favour the largest schemes. In reality, there is persistent variation between providers over meaningful time horizons. Some large schemes perform well; others do not. At the same time, a number of mid-sized and smaller arrangements deliver outcomes that compare favourably with larger peers. Scale, on its own, is not a reliable determinant of success.
This matters because regulation shapes behaviour. When policymakers imply that scale equates to safety or legitimacy, consultants and employers respond accordingly. Employer sponsors want reassurance that their scheme choice will withstand regulatory scrutiny and future consolidation. In this environment, decision-making can drift towards providers seen as “too big to fail”, even where performance evidence is mixed.
The risk is not reckless behaviour, but inertia. Assets may flow towards size rather than proven long-term value, with consequences for savers. For members in their 30s and 40s, small differences in net returns compound significantly over time. A persistent one percentage point gap in annual performance can lead to materially different outcomes in retirement.
There is also a structural issue around incentives. If remaining in the market depends on reaching certain scale thresholds, providers are likely to prioritise asset gathering. Investment differentiation becomes harder to justify when regulatory signals reward conformity. Over time, this can lead to herding, with schemes converging on similar strategies designed to appear safe rather than deliver stronger outcomes.
None of this argues against consolidation where it is appropriate. Poorly governed or persistently underperforming schemes should not continue indefinitely, and larger pools of capital can create efficiencies and investment opportunities that benefit members. But consolidation should follow better outcomes, not replace them.
A more balanced policy approach would assess scheme quality across a broader definition of value. Net investment performance, governance, member engagement and communication all play a role. Scale may support these factors, but it should not be treated as a substitute. Forcing a well-run, high-performing smaller scheme to consolidate purely on size risks weakening, rather than improving, outcomes for members.
As the DC market matures, policymakers face a choice. They can continue to equate size with success, or focus on what genuinely improves retirement outcomes. The real measure of success is not how large schemes become, but whether members are better off when they retire. The system does not need to be bigger. It needs to be better.
