@johnlair. That's got me thinking now. Where exactly was that smoke/fire spotted? I can't remember and it was quite a while ago now and not posted on here originally. Photo by someone local I seem to remember. I am not sure it matters - he clearly had a fire of some sort somewhere - and you would think somewhere remote. It was probably at Hoads Wood because one report said she had been burned with discard rubbish 
"Couzens burnt Everard's body among piles of dumped rubbish at the entrance to the woodland in Hothfield, Kent."
Hothfield is the top end of Fridd's Lane - so the fire was somewhere in the region of Hoads Wood/Great Chart.
It's behind a paywall
How Wayne Couzens lied to cover up plans to kill in days before abduction of Sarah Everard | News | The Times

"Couzens burnt Everard's body among piles of dumped rubbish at the entrance to the woodland in Hothfield, Kent."
Hothfield is the top end of Fridd's Lane - so the fire was somewhere in the region of Hoads Wood/Great Chart.
It's behind a paywall
How Wayne Couzens lied to cover up plans to kill in days before abduction of Sarah Everard | News | The Times