For decades, the Thatcher government's account of the 1984–85 Miners' Strike was simple: the National Coal Board had identified uneconomic pits that needed to close, the National Union of Mineworkers refused to accept this, and a strike followed. The closures were regrettable but economically necessary. Margaret Thatcher was the victim of union militancy, not its instigator.
The cabinet papers released in 2014 destroyed this version of events.
What the documents revealed
Documents declassified by the National Archives in 2014 showed that the Thatcher government had been planning for a confrontation with the NUM for years before it happened. Among the key revelations:
Coal stocks were deliberately built up. Power stations were instructed to stockpile coal beginning in 1981, creating reserves sufficient to withstand a prolonged strike. This planning began immediately after the government backed down from a previous confrontation with miners in 1981 — a retreat Thatcher called her greatest political humiliation.
Scargill's rhetoric was used as an asset. Internal memos show government strategists viewing NUM president Arthur Scargill's militant language as politically useful. A confrontation with Scargill could be presented as a battle against extremism — one the government was confident it could win if it picked the right moment.
The policing was militarised in advance. The government coordinated a national police response to the expected strike, pooling forces across county boundaries in a way that had no peacetime precedent. The notorious Battle of Orgreave, where mounted police charged picket lines, was not an improvised response to disorder. It was an organised tactic.
Some pits marked for closure were profitable. The economic case for closure was, in several instances, manufactured. Pit assessments were adjusted. The goal was not to rationalise an industry — it was to break a union.
Why the NUM?
The NUM was the most powerful trade union in Britain. It had already brought down a Conservative government: the Heath government collapsed in 1974 partly as a result of a miners' strike that triggered the Three-Day Week. In Conservative circles, the memory of 1974 was a defining humiliation.
Thatcher's government did not simply want to close uneconomic coal mines. It wanted to destroy the institutional power of organised labour — the ability of workers to collectively bargain, to withdraw their labour, and to force political outcomes. The NUM was the most powerful expression of that power. Break it, and the wider trade union movement would be broken with it.
It worked. Trade union membership fell from 13 million in 1979 to 7.3 million by 1992. The closed shops, the secondary picketing, the sympathy strikes — all of it was dismantled by legislation passed during and after the strike.
The human cost
The communities that bore the cost of the Miners' Strike were not abstractions. They were specific towns and villages in South Yorkshire, County Durham, South Wales, Nottinghamshire, and the Midlands — places where coal mining had been the economic foundation for generations.
When the pits closed, there was no plan. No industrial transition fund. No retraining programme. No infrastructure investment to bring new employers. The government actively rejected proposals for managed industrial transition, viewing them as a subsidy to the defeated enemy.
The consequences were generational:
- Long-term unemployment rates in former mining towns remained significantly above the national average for decades
- Life expectancy in many ex-mining communities is measurably below the UK average
- Educational attainment in these areas has consistently lagged
- Rates of depression, addiction, and chronic ill-health are elevated — documented by researchers including the Sheffield Political Economy Research Institute
The people who lost were not the shareholders of the National Coal Board. They were the miners, their families, and their children and grandchildren.
"There is no such thing as society"
Thatcher's famous 1987 interview quote — "there is no such thing as society" — is often dismissed as being taken out of context. In the context of the Miners' Strike, it reads as policy description. The communities destroyed by pit closures without managed transition were told, in effect, that society had no obligation to them. The market had spoken. Adapt or don't.
The towns have not fully adapted. Forty years on, the economic damage inflicted in 1984–85 remains visible in employment statistics, health outcomes, and voting patterns.
Sources
- National Archives — Cabinet Papers 1984, released 2014
- The Guardian — Thatcher government planned coal industry collapse
- Sheffield Political Economy Research Institute — The Impact of Pit Closures on Communities
- Raphael Samuel — The Enemy Within (Routledge, 1986)