Invicta Grammar School

This new 2-storey classroom block is the 9th major project we have carried out in partnership with Valley Invicta Academies Trust.

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Valley Invicta Academies Trust have been clients of OSG’s since our inception and Steve has worked with Invicta Grammar School for over 20 years. Invicta Grammar are part of the Academy along with the adjacent Valley park School, with whom we also work. This is the 9th major project we have carried out in partnership with both schools along with several others in the wider academy. Whilst there have been a number of changes in headteachers, we have always maintained a fantastic working relationship with the senior leadership team.

Invicta Grammar School is a popular and outstanding 11-18 selective girls’ school which welcomes boys into the Sixth Form. With over 1600 students on roll, including early 400 in the Sixth Form, the school is widely recognised as a beacon of excellence, innovation and collaboration. With the continued need for places, we were asked to design and tender a new two-storey classroom block incorporating 12 General Teaching Areas, two offices and ancillary areas.

Project Details

  • Project Name

  • Invicta Grammar School
  • Location

  • Maidstone
  • Client

  • Valley Invicta Academies Trust
  • Project Value

  • £3.3 Million
  • Completion details

  • On site to June '24
  • Project Team

  • Contractor: WW Martin

    Engineer: Abstruct Consulting Ltd

    QS: B & M

    M&E: SWECO UK Ltd

    RIBA Stages: 0-7

Technical Detailing

One of our senior Architectural Technologists, James Henstridge, has developed the technical package using Revit. This has assisted with the interface between the steel frame and the services installation. In particular, the ventilation ductwork has proven taxing but the Revit program has enabled consultants to avoid clashes and design a suitable solution.

The site sits upon bedrock, which has resulted in a piled solution for foundations. We are using a masonry outer skin with a Metsec metal stud internal skin. The ground floor is a suspended beam and block floor, with the first floor being a concrete on a metal deck. The roof is a Bauder insulated system on a metal deck.


We are working with a strong consultant team and one of Kent’s leading main Building Contractors. The emphasis is very much on teamwork and this includes the client team, particularly the Academy’s Estates Director Pete Sargent.

It is hoped and expected that the completed project will be a great success and complement the other surrounding works we have done at the school.

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