[Carth]

I can't be bothered to trawl through the internet all day Andrew, but perhaps these few links may answer your question in some small way.

Forecasts and analysis are simply a guessing game . . links are various and scattered, but the story is the same

https://www.express.co.uk/finance/ci...y-got-it-wrong

https://www.poundsterlinglive.com/ec...ital-economics

https://www.theguardian.com/business...-admits-errors

https://www.wsj.com/articles/wall-st...ong-1511474337

https://www.independent.co.uk/news/b...ng-186090.html

http://betagroup.co.uk/economists-never-learn/

https://iea.org.uk/uk-economy-likely...in-2018-again/

https://www.spectator.co.uk/2017/01/...about-experts/