Use a pale colour with a bit of warmth in it - Farrow & Ball Joa's white. Don't be tempted to go white as it'll look too cold but something like Dulux Jasmine White or Farrow & Ball White Tie have some warmth. Avoid cool colours - blue, green or grey. You could try a light reflective paint - Dulux Light & Space paint in morning Light or Frosted Dawn, some people swear by them as they have light reflective particles that bounce light. Then get as many pale reflective surfaces in there as you can to bounce light around - mirrors, flooring, furniture. If you fancy wallpaper go for pale ones with pearlescent inks - Laura Ashley do plenty with shiny inks and usually have some sort of sale on. Make sure you don't have any heavy window dressings blocking any light.

Hi, I think your scheme is going to work very well. I tried to imagine the dining room table gone and replaced with something a little more Scandinavian, with maybe mustard colour seats, Grey or White. I think the Armchair will look good in Mustard to bring together the other end of the room with your Swivel chair. The coffee table will need to go as it's just to modular to fit in with the theme. However, the pale wood of a scandinavian coffee table is going to sit very well on your rug and will pick up on the floor colouring, blending it all together. Add some funky cushions to the sofa, job done.

The original conservatory was balanced and, am not sure if it is the angle of the photo or not, but the new work looks like over-development with the old house looking lost.

Hi Lucy, I think that of those options, 2 roof lanterns would look better, but both options would bring in a great amount of natural light. I would want to create some centrelines from the windows and doors to define the centres of the lanterns. But then this looks like it probably wouldn't line up nicely over the island. You can have pendant lights installed hanging from the mullions of a timber or aluminium frame roof lantern, but if you are having UPVC or a contemporary frameless glass version then this would be more difficult! Your architect has handily included a north arrow on the drawings which show it as north facing. So these rooflights shouldn’t create excessive solar glare apart from possibly in the evening onto the kitchen area. I recommend that you get your architect/designer to provide you with a simple solar study to show accurate shadows at different times of the year at times that you regularly use the kitchen. My suggestion would be to create a strip of glazing at the join with the existing house. (similar to the image Bespoke Glazing Design sent above) This would bring the light deeper into the existing building, where the dining area is, and also allows you to place your lighting over the island and anywhere else more easily. Please let me know what you think? And I wish you all the best with your extension project!! Phill