Who for non-standard kitchen?

We've bought a our first gaff and it came with the most ridiculously laid out Wren kitchen (in fairness we dont know who did the design and the units do look good for their age) and so its our first priority to replace it.

The Mrs has done a design with a company which is based on a concrete type effect for the floor and tall units, a matt white for the few wall units and a hardwood worksurface which is repeated in open shelving etc.

She wants a number of design features like the tall units being ceiling to floor to go around our fridge/freezer and house ovens etc, a peninsula with cutdown depth units so they are back to back but not double depth.

Any recommendations of who to look at who would give a good price and good quality (we're east London based) for a price check? We did look at one of the usual suspects who were only a bit cheaper but couldnt get close to the design because of having to use standard height/depth units (so rather than back to back on the peninsula they suggested having the backing display units up at wall unit height on a pole).

We're wanting to achieve a fairly high finish so not looking for the bargain corner but obv dont want to be ripped off.

Thanks