You would need to make your objections using the National Planning Policy Framework, with reference to your local plan. The NPPF covers elements relating to historic and conservation areas, as well as sustainability and environmental considerations
As you have an adopted plan, the District Council have an obligation to take this into consideration when making their decision or recommendation.
If your Neighbourhood plan supports such a development on the basis of economic benefit to the parish that is great but you still have the right to object and insist that the development is in keeping with the rest of the surroundings. There would be no comeback if your objections and genuine, factual and based on the NPPF, I would imagine.