The event is arrange for 4-5 September in Manchester, where there are local COVID-19 restrictions.
There will be no testing, but athletes, staff and volunteers must stick to 2-metre social distancing.
“They will be given very strict guidelines,” Coates said.
“If they break them, it will be taken extremely seriously. We have had lots of communication with athletes, we are assuring them it will be a safe environment so we are hopeful that they don’t behave like that.”
There will be one-way systems and athlete will have to turn up at set times at the behind-closed-doors competition, British Athletics’ first major event since February.
The Championships were believe to serve as Olympic trials in June, because of COVID-19 it was pushed back to August and finally September.
Coates added that “cancellation isn’t being spoken about at all” after new lockdown measures were announced in Greater Manchester.