I found this interesting. It’s mainly about how Brexit has introduced extra red tape when dealing with Europe. The article says how the EU is the UK’s largest trading partner, with the value of trade being over double that of the next largest trading partner: the USA.
Here are some quotes:
The days of freedom of movement for people, goods, and services between the UK and its neighbours are long gone.
The British economy has lost out and British citizens and businesses suffer from greater bureaucratic botheration.
Nor has immigration into the UK gone down since leaving the EU. The numbers have actually gone up, with people from Commonwealth countries, including India, Pakistan and Nigeria, more than compensating for EU citizens who used to come and go.
On the economic side I’m inclined to agree with you that I don’t think the EU is a miracle growth cure. However, you could argue that Brexit has helped sink all boats (at least a bit). I think it’s easy for people to dismiss the UK’s importance to Europe, but just like the US tariffs I suspect it hurts everybody.