The Ministry of Defence looks set to withdraw its objections to a scheme extending Helston's Bulwark Estate, clearing the way for the Coastline Housing development.

In October the MoD, which runs the neighbouring RNAS Culdrose naval base approximately 660 metres away, put the plans in serious jeopardy after objecting on the grounds of public safety, vibration levels and the potential noise levels for future occupants of the proposed 75 affordable houses.

They stated that helicopter rotors turned for "extended periods" before and after landing, with the aircraft also hovering the ground for 30 minutes or more during training, and felt that "insufficient data" had been collected for an environment noise assessment.

However, the MoD has now said it would withdraw the objections if granted a "deed of easement," meaning the naval base can operate at noise levels that would otherwise be classed as causing a nuisance, not limited to day or night.

Coastline could then include a clause in its rental and shared ownership agreements preventing the occupier from raising any form of complaint against the MoD, over disturbance relating to the operation of Culdrose.

A spokesperson for Coastline said a "dialogue has been ongoing" with the MoD, adding: "The MoD will be withdrawing the objection."

Designs for the 100 per cent affordable homes on fields adjoining Bulwark Road are now back before Helston Town Council tomorrow evening for its planning committee to re-debate, after it was judged there to be substantive new information.

Previously the council recommended refusal of the application due to confusion over a drop-off area for neighbouring Nansloe Academy, "insufficient information" on other highways issues and the need for more assessment on the noise impact for residents.

Coastline said it had since commissioned a road safety audit and a "construction phase" traffic management plan, the results of which will be discussed by the council and their views passed to Cornwall Council.

Nansloe Academy has also raised objections, with headteacher Charles Field writing to Cornwall Council with his concerns about the access and safety of children walking to and from school.

His letter includes doubt over the designers' intention to create a "loop allowing vehicles to enter and leave forwards, without the need for turning manoeuvres" - but Mr Field said: "The assumption that parents/carers in the morning peak would be willing to negotiate around a residential road of approximately 500m, being delayed by on-street parked cars, car manoeuvres, pedestrians etc is not realistic."

He described it as a "major highway safety concern" and predicted that drivers would "all try and turn within the first junction of the new estate."

Mr Field also had concerns that the new development could limit how the school might be able to expand in the future, to take in extra pupils.