Structural Calculations & Drawings for a 2-Storey Warehouse in the UK

I need structural calculations and structural drawings for a small 2-storey warehouse project in Harlow, United Kingdom. Planning drawings, floor plans, elevations and site plans are already available... (Budget: £20 - £250 GBP, Jobs: 3D CAD, 3D Modelling, Architectural Engineering, AutoCAD, Building Architecture, Building Design, Building Regulations, Civil Engineering, Construction Management, Structural Engineering)