"The reason is because these events occurred within a limited specific area."

Yes. 13 towns and cities in a 14 year period.
Not insignificant Lox.

"The dando report rejects the idea that street grooming is a crime."
No Lox, the Dando report was ABOUT "On-street grooming by groups."

"The new Ceop report will be studying similar data to the dando report on a national level."
Yes Lox. It is also studying "On-street grooming by groups."
They must think it exists too!