Politicians and tax errors usually guarantee a political firestorm. When Green Party leader Zack Polanski faced allegations of ducking council tax while living on a narrowboat in east London, his political opponents smelled blood.
The Greater London Authority (GLA) ethics probe into Polanski officially closed with a "no further action" ruling. The monitoring officer decided the drama was a private housing matter, not a breach of the politician's code of conduct.
Case closed? Not quite.
While the ethics watchdog washed its hands of the situation, the local borough is still digging. This saga isn't just a story about a politician making a mistake. It highlights the confusing reality of how the UK tries to tax people who choose to live on the water.
The Ethics Verdict and Why the GLA Walked Away
The political attack was straightforward. Conservative and Labour members claimed Polanski broke the GLA code of conduct. They argued he wasn't paying the taxes he voted on for everyone else.
Rory McKenna, the GLA's monitoring officer, shot that down. His report made it clear that personal council tax liability doesn't automatically touch a politician's public duty. Crucially, Polanski didn't owe any confirmed arrears at the exact moment he cast votes on the GLA budget.
The watchdog ruled that the dispute lacked a meaningful connection to his official role. But clearing an ethics hurdle doesn't mean your tax bill magically disappears.
The Waltham Forest Investigation is Still Live
Don't mistake an ethics clearance for a clean bill of health from the taxman. The London Borough of Waltham Forest is still actively investigating whether Polanski actually owes money.
The financial stakes aren't massive in the grand scheme of political scandals. Experts at Tax Policy Associates estimate the three-year liability for a permanently moored narrowboat in that area sits around £4,000.
Polanski's defense relies on an explanation that many London renters will find relatable, even if it looks naive for a major party leader. Before moving to the boat, he spent five years as a property guardian, paying a flat license fee that rolled rent, utilities, and council tax into one single payment. When he shifted to the narrowboat at Lee Valley Marina in August 2022, he assumed his mooring fees covered his council tax the exact same way.
He admitted he didn't check the fine print. He called it an "unintentional mistake" and promised to clear any bill the council produces.
The Wildly Confusing Rules of Houseboat Taxation
The real mess here is that taxing a boat in the UK is a legal headache. Council tax isn't a tax on a person; it's a tax on a physical dwelling.
For a boat to trigger council tax, two strict legal conditions must collide under the Local Government Finance Act:
- The boat must be someone's "sole or main residence."
- The mooring itself must be permanent or long-term.
If you are a continuous cruiser moving every two weeks, you don't pay council tax. You pay your license to the Canal & River Trust instead. If you have a permanent berth but only use the boat for weekend getaways while living in a flat, the boat still doesn't get a separate council tax bill. The marina operator pays business rates on the land, and your mooring fee covers that business cost.
But the moment that boat becomes your primary home, the boat and the mooring legally morph into domestic property. It gets dumped into Band A, and you owe the local town hall directly.
Polanski's boat sat right on the boundary line of two different local authorities, making it even harder to figure out who was supposed to bill him.
Housing Insecurity Hits the Political Class
The most revealing part of this row is Polanski's defense strategy. He didn't claim wealth or privilege. He pointed directly to his own history of financial hardship and housing insecurity.
Living as a property guardian or choosing a narrowboat are classic survival strategies in London's broken housing market. Property guardianship means living in vacant commercial buildings for cheap rent to keep squatters out. It's precarious, often cold, and comes with very few legal tenant rights.
When a prominent politician uses his own experience with unstable housing to explain a tax oversight, it shows just how deep the capital's housing crisis cuts. It chips away at the idea that all senior politicians live completely insulated, wealthy lives.
What Happens Next
If Waltham Forest decides Polanski owes the money, he will have to pay the back tax. Interestingly, the UK council tax system doesn't hit people with heavy interest or backdated percentage penalties for careless mistakes. The absolute worst-case scenario under standard rules is a flat £70 penalty for failing to notify the council of a change in housing status.
Polanski has already pledged to pay the council immediately or donate an equivalent sum to a homelessness charity if the legalities remain murky.
If you live on a boat or run an unconventional household, don't wait for a political opponent to flag your file. Check with your local authority to confirm whether your mooring is assessed for council tax. Get the confirmation in writing. Assuming the landlord or the marina has sorted it out is the fastest way to land yourself a surprise back-dated bill.
