Every punter would be screwed
Imagine, “how’d you know the deceased”
I should think the answer would be....intimately
If it's an outcall to your own home it's possibly easier for the wg to deal with and for the police and ambulance, I'm not advocating it but she can pack up, tidy up, leave saying noting, she could also once away from the area, call 999 stating she can't get hold of her relative etc, has been trying for hours, she lives away etc and ask for a welfare call. She could also stay if she knows that client is single and call 999 she doesn't have to state her relationship with the deceased.
For an incall to an sp who works from home thats a bit more tricky I would think, I couldn't exactly bundle him out the door dead
so it would have to be 999, clear the room of 'work paraphernalia' and go through pockets for a car key, find car and I would most likely find his correct I'd and phone which can then be placed with belongings and burner phone discreetly placed out of the way, but then by that point the family are going to find out anyhow so