This from the FA:
We are deeply saddened by the passing of Billy Vigar. Our thoughts and heartfelt condolences are with his family, friends, loved ones, and everyone at Chichester City FC, and tributes will be paid to Billy at National League System and Emirates FA Cup games this weekend.
Whilst the health and safety of participants and spectators at the National League System level is the responsibility of the clubs and their local authorities, we will now conduct an immediate review, working with leagues, clubs and relevant stakeholders across the game, that will focus on the safety of perimeter walls and boundaries around pitches in the National League System.
This will include looking at ways we can assist National League System clubs to identify and implement additional measures at their stadiums that they determine will help to mitigate any potential safety risks.