This is a working note on a paper I’m still writing. The argument is load-bearing but the scaffolding is still up.

Every democracy runs on a quiet bargain: organised interests get to whisper in the ear of power, and in exchange the public gets to see them do it. Lobbying is not the corruption; the invisibility is. A meeting nobody can point to, a draft amendment with no fingerprints, an “industry consultation” whose participants are never named — that is where legitimacy leaks out. So the interesting question is rarely should interests have access. It is who gets to watch.

Brexit is usually told as a story about markets, borders, and sovereignty. I’ve become more interested in a smaller, stranger consequence: when the UK left the European Union, it didn’t just leave a single market. It left a referee. And it left that referee holding the only serious rulebook in the room.

The core tension

The claim. Withdrawal set off a process of de-Europeanisation — regulatory authority snapping back from Brussels to Westminster. That sounds procedural. Its effect on transparency is not. EU membership had layered a supranational oversight regime on top of British practice, most visibly the EU Transparency Register, which drifted from a voluntary scheme to a de facto mandatory one once the Commission agreed to meet only registered lobbyists. Leaving pulled that layer off. What’s left underneath is the UK’s own instrument, the Transparency of Lobbying Act 2014, which registers only consultant lobbyists — by some estimates as little as 1% of actual lobbying activity.

The evidence. Two literatures usually sit in separate rooms, and the paper’s job is to make them talk. The first is behavioural: Coen and Katsaitis show that after Brexit, British business didn’t stop lobbying — it relocated, redirecting resources from Brussels back onto UK departments and Parliament, with the shift varying by sector (technical, regulatory fields keep their access by trading expertise; redistributive fields like fisheries and agriculture get squeezed). The second is institutional: Crepaz and Worthy anatomise the UK register as narrow in scope, thin on disclosure (no targets, no expenditure, no subject matter), scattered across portals, and toothless on enforcement.

Put the two together and you get the thing that actually worries me. A larger, more domestically concentrated wave of lobbying is now breaking against a regulatory system built to see almost none of it.

Why it matters. This is the part that makes it more than a UK curiosity. Europeanisation scholarship spent years asking how EU membership pulls national systems up toward common standards. Far less asks the mirror question: what happens to a governance standard when the external constraint is lifted? Brexit is a natural experiment in the resilience — or fragility — of transparency norms once nobody supranational is enforcing them. The UK is simply the cleanest case: unusually high domestic lobbying activity meeting unusually weak domestic rules. If transparency erodes anywhere under those conditions, it erodes here first.

The thing I keep coming back to

Opacity isn’t neutral. Crepaz and Worthy make a point I keep returning to: a partial transparency regime can be worse than an honest absence of one. A register that captures 1% of lobbying doesn’t reassure the public — it hands them a keyhole and lets them imagine the rest of the room. The suspicion that “the system is rigged for insiders” feeds less on secrecy than on the gap between what’s disclosed and what everyone knows is happening. Britain didn’t leave the EU and lose its transparency in one clean stroke. It kept a register that looks like accountability and functions like a fig leaf.

The devolution wrinkle makes it sharper still. Agriculture diverges — England and Wales drift from EU frameworks while Scotland holds closer — so “the UK regime” is already a patchwork of transparency expectations rather than a single standard. De-Europeanisation, it turns out, is not one door closing. It’s several, at different speeds, in different rooms.

That’s the paper’s wager: to stop treating Brexit’s transparency effect as either purely a behavioural story (where the lobbying went) or purely a design story (how bad the rules are), and to ask what happens when the two collide. My working answer — still being argued out on the page — is that removing supranational oversight doesn’t produce a dramatic scandal. It produces something quieter and more corrosive: a functional erosion, where activity rises, visibility doesn’t, and trust pays the bill.

What I’m reading

The sources doing the heavy lifting while I draft:

  • Coen, D. & Katsaitis, A. (2022), “Hedging Bets: British Business Lobbying in the EU post-Brexit”, The Political Quarterly. The behavioural backbone — where UK lobbying resources went after Brexit, and why the answer differs by policy field.
  • Crepaz, M. & Worthy, B. (2023/24), “Cleaning up UK politics: what would better lobbying regulation look like?”, Parliamentary Affairs. The sharpest autopsy of the UK register’s three failures: narrow scope, thin disclosure, no teeth.
  • James, S. & Quaglia, L. (2023), “Differentiated de-Europeanisation: UK policy-making in financial services after Brexit”, JEPP. Where I get the core concept — and the crucial point that de-Europeanisation runs at different speeds in different sectors.
  • Dinan, W. (2021), “Lobbying transparency and the limits of EU monitory democracy,” Politics and Governance. The EU side of the ledger — how the Transparency Register went de facto mandatory, and why self-reporting still limits it.
  • Chari, R., Hogan, J., Murphy, G. & Crepaz, M. (2020), Regulating Lobbying: A Global Comparison, Manchester University Press. The comparative yardstick that lets me say “international outlier” and mean something by it.