Yes, no and maybe. It depends on what you think “plans” are.
If having documentation in place which prescribes things to do – and looks a bit like the FROM column below – constitutes a “plan” – then NO.
If having arrangements in place which will support you to assess impact, make informed decisions and implement those decisions effectively – and looks a bit like the TO column below – constitutes a “plan” – then YES.
Why did I answer “NO”?
Because we rely on an agile approach to business continuity.
We live under the TO column (in the above Table).