ACRE
The Parish Planning toolkit is excellent

Tees Valley Rural Community Council
Who we'd be working with to develop our community plan. Their events section includes training on developing a Community/Parish Plan

The Sadberge Village website
You can view their draft Parish (another term of their Community) Plan online.

Middlesbrough Council Planning Portal
Use this link to view the full application and object online

Campaign for Planning Sanity
A very helpful website

Planning Help (Campaign for the Protection of Rural England)
The "Support for your arguments" section is very helpful.