When you’re planning your home extension in London, you’ll spend a lot of time thinking about what you’ll be able to do inside that new space. Whether it’s deciding on the fixtures and fittings for your new kitchen or the soft furnishings for your new lounge area, you’re bound to devote a lot of time to cutting pictures out of magazines, collecting swatches and browsing shops. You may not spend quite as much time, however, thinking about how you’ll connect…