Who broke Britain? Welcome to The i Paper’s new opinion series in which our range of experts tackle this question and identify the individuals whose decisions caused the country’s biggest problems.

• David Cameron: The unlikely villain who casually killed the Conservative Party
• Tony Blair: A sincere deceiver who broke Britain’s trust on migration
• Andrew broke our bond with the monarchy and put the Royal Family at risk

Dominic Cummings has a big brain. Those who worked with him suggest he also has an ego of similar volume. This combination is not unusual in politics, but Cummings’ extraordinary talent for disruption meant his wrecking-ball abilities are unparalleled in recent British political history. Unfortunately he has never been able to translate this talent for disruption into a similar talent for building anything that has definitively made Britain better.

Cummings was most obviously the undisputed mastermind of the Vote Leave Brexit campaign of 2016. His success in Britain breaking with the EU was bad enough in itself. But it also damaged the unity of the United Kingdom, upended the Conservative Party and helped push a succession of failed Tory leaders into Downing Street. The party of Disraeli, Churchill and Thatcher is right now scrabbling at around 20 per cent in opinion polls, about the same as the Greens.

Cummings is therefore a key player in breaking 21st century Britain, breaking Boris Johnson and

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