Karl Marx, Hans Holbein, George Frideric Handel, Kai Havertz: some Germans do their best work in London. This, plus Germans being, in my experience, the best English-speakers on the continent, can feed the sense that these are kindred countries, despite the first half of the last century.
But Germany specialises in manufacturing. Britain is the second-biggest exporter of services in the world. Germany has a spread of important regions. Britain is more dominated by its main city than perhaps any rich nation of significant size. Germany has coalition governments, with three parties in the current one. British politics is so winner-takes-all that Keir Starmer got a 174-seat majority from a 34 per cent vote share. Germany’s fiscal policy is prudent to a fault. Britain has not run a budget surplus since the turn of the millennium. Germany is federal. Britain is centralised. Germany was a founding member of the European project. Britain joined late and left.
Even the texture of life in these countries is exactly different. You can ride a space-age train across Germany and then see someone using a fax machine on a non-ironic basis. Britain is better digitised but less good at tangible infrastructure.