You could take your chances with a skylight or sunroom (if those are available to you), however the best option ... by little each time the plants get watered. Green beans will start producing ...

As soon as young beans appear at the base of the plant it's time to 'pinch out' the growing tips. Go to the very top of the plant and remove the tip with two leaves attached, you can compost these ...

Beans are perfect for a sunny, well-drained spot. They prefer to grow in moist, fertile soil in a sheltered spot away from strong winds, but can also be grown successfully in pots. Sowing seeds ...