Prototype garment

Details about the apparel: Part made from heavy 16oz cotton canvas (or similar)
Content to include on the apparel: Quality stich work, ethical fabrics, functionality
Ideas for the visual style: Nordic meets navel dazzle patterns
Things to avoid: Heavy branding,
Preferred colors: tbd
Extra notes: Dear pattern / garment maker,

I'm looking for someone able to support my project by facilitating the the making of prototype garments. I need some one able to take what i have, (flat sketch work and a very rough prototype) and translate that into a wearable garment, that can be tested, and iterated as appropriate.
Then Dependant upon its judged success i will require support in generating the patterns to have the garment manufactured (in England), i wish for the garment to be robust, and simple to make. I envisage 2-3 sizes only.

I am a industrial designer so have opinions on the visual aesthetics and functionality but would value someone willing to challenge these ideas and be able to bring new perspective.

Im keen to proceed quickly and would like to start soon, i would prefer to be able to meet to talk though the project and hand over samples, My studio is in Clapton North London so would prefer to find someone also working in and around this area.