I think I would go with the purbeck stone. I have elephants breath but it can be warm in South facing rooms and as your flooring is really warm I'd go for a contrast. I wouldn't go for the Hardwick for the same reason. Maybe get testers of both though to see how it works? The Dulux looks nice but I think a deeper contrast with the White may work better i

I obviously need to learn to read. Sorry! I would have a hanging light, not flush, because it is a big space out there and you can make a feature of it. Have a look here: http://www.thelightingsuperstore.co.uk/Outdoor-Lighting/Lanterns-and-Flush. They have galvanised, stainless steel, etc. etc. And also John Lewis have a few, and some with matching wall lights.

So you know I bought a single 'click deco' brand dolly light switch a while back and found it to be pretty poor quality so it was returned. Ended up with these: http://www.forbesandlomax.com/the-unlacquered-brass-range.html Really good quality and they have lovely finishes too. I quite like their antique bronze range too as it contrasts nicely with chrome/nickel finishes without clashing. If you'd really like everything to match then take a look at the Jim Lawrence range. They're not the cheapest but offer both light switches and door furniture in a large selection of finishes. They also do the narrow style of light switches which I think looks really elegant in older houses. https://www.jim-lawrence.co.uk/door-window/door-handles-door-knobs/bromley-handle-with-bristol-keyhole-backplate-in-510201bw?returnurl=%2fdoor-window%2fdoor-handles-door-knobs%2f%3fcount%3d36 https://www.jim-lawrence.co.uk/1-gang-dolly-architrave-switch-in-chrome-with-3279chniz https://www.jim-lawrence.co.uk/2-gang-black-dolly-switch-bevelled-plate/

I think three would look more aesthetically pleasing. How about copper? It is very popular at the moment, but still has that lovely country look which would look fab in your kitchen. I also like the enamel look rather like your example, but white would be a little too safe? Any colour would look good as your kitchen is nice and neutral. For something a bit difference Laura Ashley do a double light fitting with a horizontal rod with two lights hanging from it. I’d send you a pic but don’t know how to! It’s quite pricey, but my friend bought a similar one in chrome for £30 from Ikea!