Business illustrations

I am looking for a London based artist that can help create images for a business. The images will represent different realistic scenes from that business’s service and will be used to test customer’s preference. The images will need to be realistic and highlight specifics in a scene (eg, a a certain type of cash register at a department store counter). We will want it to be clear what the focus is in each picture. We will be looking for ideas on how to best represent this. So, we need an artist with some vision. Possibly you have worked for a business client previously. This is best for an artist who works swiftly in the creation process. It will be best if you can work in my presence so I can provide immediate feedback. There will likely be a number of edits/ changes required in the process so it's best if most of these can happen immediately rather than with 24 hour turnarounds. Ten different sets of digital ready images in color are required for mid April. Each set is composed of two images - for example one set might be a store scene with a focus on a cash register that has a neon display and in the other scene the same store but with a cash register more or less hidden from view. We are open to the exact nature of the image. I would like to meet with the artist in person to discuss the parameters. Please show examples of work showing some realistic scenes if possible.