Objecting to planning applications is an emotive thing but the important bit to remember is sentiment means nothing in planning law!
To give your objection weight you really need to me able to prove that the proposed development is CONTRARY TO ADOPTED POLICY - that is you have to look at the adopted local plan, plus national & regional policies, & demonstrate how it fails to comply. For example, traffic, there is no way that a development that size will survive on what is called 'pass by' trips so it will draw visitors in from a much larger area & any reliance on use of car, instead of public transport or other sustainable travel such as walking & cycling, will doubtless be contrary to their policies of sustainability, climate change etc.
The council may have declared a climate change emergency, in which case there will be opportunity for you to base objections around that too.
On a practical level, does the proposed development meet the standards for provision of EV parking/charging points - either the planning authority or highway authority will have published standards & these are starting to get quite high with requirements for % 'active' spaces to be use during immediately plus % 'passive' spaces that have to be ready for use or brought into use by a given date. Supplying power to these can be a big, and costly, problem.
Look at the previous applications & what policies were quoted by the council in their refusals for these & cross check if these policies are still current or if there are updated versions & see if the reasons quoted before still apply - if they do then point this out & ask how the council can now ignore them.
Is the area designated for retail development? Large retail developments like this can & do draw shoppers away from town centres, what policies have the council got to protect existing town centres? Will thIs development protect them?
We're any of the previous reasons for refusal citing landscape or environmental impacts? - if so push these & contact the relevant statutory bodies who objected last time & lobby them to make sure they object this time too.
If it is material to the proposed development, or allocation of the land for development by the council, then the feasibility study must be made public, they cannot rely on a document that any objector is not allowed to see if the information it contains is material to the application.
Finally lobby your local councillors, especially if any are on the planning committee, & make sure they realise that if they, or their party colleagues, support this application they will not be getting votes at the next elections. Ditto county councillors & MP.
Good luck & be prepared to spend a lot of time on this.
