I think plan2 looks/works best but i'd suggest a few changes. For the tower run, having only a 20mm filler is to tight and doors open more than 90 degrees so they'll be rubbing at the freezer end, i'd suggest changing the 600 and 800 larders to a 1200 breakfast style larder, having drawers and worktop inside, shelved above and power for toaster etc, the doors can be pocket style so they open then slide down the sides out of the way when in use, make the wall nib a bit wider by about 100mm so you have 50-70mm fillers at each end, probably bring the towers forward (or make them extra deep) and this would allow for the pocket doors to slide away more. Depending on ceiling height you could have extra tall towers or top boxes on top and then infill about 50-100mm up to the ceiling. Also check the height of the appliances as in the pics it looks to high, i'd have a 450 frontal with pan drawer and internal drawer instead. On the opposite wall as long as all the 800 drawer units end past the window is good, window sill same as worktop possibly, (either end the run before or after the window) lose the 400 open unit in front of the wall nib and have a door (door could be made to look like 2 drawer fronts to match) on this as it will be just a dust trap, in the 1000 drawer units i'd suggest having internal drawers for utensils etc, the corner unit is good especially with the fly moon pull out as they're great (in my opinion) and as the corner post is made on site its gives the fitter more flexibility in positioning the units as its not a fixed corner. The sink run is fine but i wouldn't suggest opening a d/washer door to let the steam out as it can damage the surrounding doors, cabinets, decor panels and even worktops (thread on mumsnet where steam has damaged granite worktops). For the island if a 500 bin is big enough then fine but you might find a 600 pull out is better as its usually a 4 bin unit, possibly change the 1000 1+2 so its a 2 pan with internal drawer and then on the other side i'd have 2x 800 which would look more symetrical. For wall units its up to you, but if its an electric hob (especially induction) the extractor should be wider than the hob and if this area is going to be a main prep area than having wall units you can add extra lighting.

I can see why you've designed it like that as it'll be lovely and simple to look at. For me the walking so much woud be too annoying though, so I'd choose function over beauty and put the sink (or hob) on the island - and turn the island round so it's parallel with the run of kitchen. Get the hob (or sink) plus fridge plus larder unit on one long run. Opposite tall units can be freezer, ovens and extra larder space. And I'd look for a round dining table to fit in the bay window area - something extrendable for larger dinner parties. Or a long skinny table on the other side of the island and keep all of the kitchen on the back wall and island only - would need to check dimensions of table and chairs to see where they would fit best, maybe an upholstered corner bench situation in the bottom right corner would be nice?

I love the way you have laid this out, however to make it a practical working space, you will need to move your sink should closer to the hob. When designing a kitchen layout, you should create a working triangle between your hob, sink and refrigerator (I have attached an image to explain). To achieve this you could explore the following 3 options: 1. Could you position the stove on the island instead and go with a range cooker instead of separate ovens? This way you will have a working triangle, and can use the other side of the kitchen for storage and larder etc. 2. Explore how much it would cost to position the sink on the island. As you are removing a wall, you will probably be re-doing the floor, so extending the pipes across to the centre of the room, may not be as big a job as you think. 3. Lastly you could explore this layout I have attached - it's not a kitchen island, but will give a similar feel to the room and you will have the working triangle (shown in Red). Let me know if you want any further help. Tessy :-)

I don't want to pour cold water on your wife's aspirations but that is very narrow for an island. If you allow 600mm for a run of units each side then about 1m each side for access then that leaves about 400mm for an island. Not enough. If you used the long wall for a bank then you would have about 2.5m left over which might just give you enough clearance for a narrow 600mm island. I don't think an island is the best use of the space. I would go for a galley style with some tweaks to get the maximum storage. Do you mean a breakfast nook with a banquette and some seating as that would also be very tricky. I would go for a galley with a full height bank on the left and a round table with a couple of streamlined chairs in the bottom right corner as it is a bit wider there. You are also going to need a lot of filler panels as the walls are not square which will not be usuable storage space. If it was me I would start marking out some of these dimesions on the floor with tape or use cardboard boxes or something to get an accurate idea of scale.