Mechanical HVAC Design

I need a designer capable of producing a complete Mechanical Design to provide forced ventilation with Heat Recovery to provide fresh air and extract air to existing single storey building to British Standards and regulations.

The works entails (but not limited to):-
Detailed Mechanical drawings (AutoCAD files to be submitted upon completion)
AHU(s) detailed specification & selection
Ductwork sizing
Equipment, attenuators, Volume Control Dampers, fire dampers & Grille Schedules
All calculations to be submitted upon completion

Design to be checked prior to release of payment (Please note checking may take 72hrs / 3 days before release of funds)

Design to be returned 3rd August at the latest, please do not apply for further details if you cannot meet this date.

PLEASE CONTACT ME FOR AUTOCAD DRAWINGS, QUESTIONS AND FURTHER INFORMATION TO BE ABLE TO PROVIDE A COMPLETE PRICE FOR WORK MENTIONED ABOVE.