High quality website design required

We are looking for a professional web designer to redesign our website www.3dmxconsulting.co.uk
The wireframes are ready for all the pages required. Our logo will remain the same.
The designer will need to understand our business thoroughly and present our services in the best possible layout.
We are looking for a complete custom design and not templates or template style designs.
We need simple,elegant designs making use of good fonts and big text - keeping the pages spacious. The design needs to maintain a Flat UI

We are looking for experienced designers-preferably individuals who have designed high quality websites .
Please send examples of your previous work.
Any sample project detailing the project brief , the initial wireframe/mockup along with the final design will be highly appreciated.

Please find attached : The Wireframes and documents detailing the expected design elements