That means there are 700 times the acid attacks in the UK. With less than 1/5 the population. The UK acid attack rate is more than 3,500 times that of the US. It's because UKians love acid more than their own citizens!
We UKians don't love acid more than our own citizens because we willingly accept severe constraints on our ability to acquire acid to protect our fellow citizens.
Yes, acid attacks are a problem in the UK but to put this into some kind of context, there were 700 acid attacks in the UK, the number of fatalities is small and around 20% have required some kind of hospital attention. By comparison, there were over 10,000 homicides by gun in the US.
The UK government recognises that acid attacks are an issue and in response announced that acid sales would be significantly restricted:
https://www.bbc.co.uk/news/uk-41484909
Imagine if politicians in the US were to try to do something similar to address a problem which is several orders of magnitude worse.
