> Not British but I've been to both countries and can't say I noticed much difference in their bread.

I've lived in both places multiple times for years and decades. But even a cursory visit should show you vast differences. The Brits don't even believe in rye.

You can do a simple visual comparison from the comfort of your own home:

https://duckduckgo.com/?q=!i+deutsches+brot

https://duckduckgo.com/?q=!i+english+bread