Yeh you can grow outside in the uk no problems! Type your towns name into google and search for your latitude. If this is your first time growing, I would suggest lowryders, you dont need to worry about light cycles, simply germinate them then veg indoors for 17-20 days under a 125w blue cfl til they show there sex, female's you keep, males throw away and then put them in a 2 gal pot or into your prepared patch in the ground. water well and come back in 2 weeks to feed them with sum water if they need it and some bloom nutrients. then just come back in a few weeks n ther done. I would check uk420, u will find people ther growing same areas as you!!