A pretty good article and I really like her views:
https://www.sportinglife.com/racing/news/lydia-hislop-why-pre-race-screening-of-horses-needs-to-be-enhanced-now/209556
The part I like most is this one:
When I spoke to York’s chief executive William Derby following the second fatality on Tuesday, he said he would like to see pre-race trot-ups introduced for all horses entered at his racecourse’s fixtures. This is a safety measure routinely carried out for high-profile meetings in other jurisdictions around the world and yet, inexplicably, had not yet happened as a matter of course in Britain at the time of our conversation.