Given all the championship races coming up this weekend, could be the most impressive mark will come from Josh Kerr in the mile @ BU on Sunday:
https://www.lancertiming.com/BU/BU_Last_Chance_Performance_List.pdf
Peter Elliot's 3:52.02 British indoor mile record from 1990 already looks long gone.
Very possible Kerr will give Kejelcha's 3:47.01 WR -- set on same track -- a good scare.