I've figured out how to create ALL my stored procedures in 1 go.
It looks easy enough using the Script Wizard under >> Tasks >> Generate Scripts.
I can recreate all procedures and any duplicates will just be ignored!

Therefore, it makes sense to stick to the dbo schema and recreate all the stored procedures under 'nigel' schema and rename all (copy & replace all) to 'dbo' in the script which is genearted.

Becasue some stored procedures reference views which make a reference to tables in the existing schema - it will mean:
1.  Importing all the tables first from existing 'nigel' schema into 'dbo' schema.
2. And then generating a script to copy the views
3. Finally, running a script to recreate the Stored Procedures.