Googling what happened:
>In what then Foreign Secretary Boris Johnson called an "extraordinary international response" on the part of the UK's allies, on 26 and 27 March 2018 there followed a concerted action by the U.S., most EU member states, Albania, Australia, Canada, Macedonia, Moldova, and Norway, and other NATO states to expel a total of over 140 Russian accredited diplomats (including those expelled by the UK)
which I guess is not wacking Mishin and Chepiga but it's not nothing either.