Heya, seeds are totally legal in the UK, but as soon as you germinate them you are committing a criminal offence - so keep things quiet! Im glad to hear that your plant is doing OK, Ive got a 25w flouro (used in a fish tank), two 40w bulbs - like the ones in your living room - and a 20w CFL, and I plan to use them all. I was thinking that they wont generate enough light or lumens, but they should be OK judging by your setup. Id just like to add that this site http://www.greenshorticulture.co.uk/...293&subcat=296 has a 600w CFL for £20 at the moment, could be worth a look (unless youre broke, like me!)
Good luck with the plant mate!