“I had to change the way I write emails. There was no need to write in full sentences and care about grammar. Now I am learning to write as short and brief as possible, just like a native English person,” she said.

I’m not saying that they couldn’t improve on it, but honestly, that bar chart doesn’t look too damning to the UK to me:

So, okay, they’re behind the EU-14 (though not the EU as a whole) and North America/Oceania, but they’re also ahead of every other listed entry.