You need to consult with
Police - predictable increase in crime rates and policing needs
Hydrologists - ground water studies and proposal for flood avoidance
Social services - impact of social mix change
NHS - to create midwife and district nursing strategy
Doctors - to plan for rapid expansion of available GPs
Dentists - to create NHS dentist to cater for social housing influx
Schools - build a long term plan for primary and secondary education services.
Allotments - create plan to listen to current objections and make funds available for proper move of the existing allotment members.
Water boards - get proper groundwater runoff and foul water plan
Geologists - understand the geological issues in building on an out-washed, high water level, post Pliocene plain.
Qualified urban planners - to look at the socioeconomic mix of dwellings and use best practices for integration of diverse communities
Statisticians - to work out traffic flows and parking requirements
BT OpenReach - engage with them to upgrade all telecommunications and move them from 30 mbs to Superfast fibre.
Ambulance and Fire service - establish changes required to their infrastructure to cope with 3000 more people
The National Grid - to establish the capability to provide 1000 plus 100watt charging points to cater for the new green energy world. Current National grid will struggle to provide such capability, who will pay?
Special Conservation Area - make sure there are no satellite dishes, log burners, solar panels, noise producing ground source pumps etc all outlawed in the conservation area.

To take a community of 3000 people and double it to 6000 in one plan is totally unacceptable and requires more than marketing statements to achieve.
The assumption of adequate infrastructure in proposed road and minor adjustment to schools , is insultingly inadequate. The existing ‘village ‘ will be consumed by such an expansion and its social and economic make up completely obliterated. Bring in vast social housing tenants into an entrepreneurial neighbourhood will not be a comfortable integration. A consultation epithet the police would be worthwhile to understand the increase in crime that is predictable.