Extraction System Design Needed

I'm seeking a detailed design for a general extraction system, following a consultant's site survey and initial proposal.

Key Requirements:
- Detailed specifications for system layout, duct size, and fan size
- Designed for shop extraction use
Must be familiar with UK regulations

Ideal Skills and Experience:
- Expertise in HVAC or industrial extraction systems
- Experience with shop or commercial extraction system designs
- Ability to provide precise technical specifications

Please provide relevant experience in your bids.