OK Four different questions.
Laws On:

1:Growing indoors?

2:Growing outdoors?

3:Growing indoors and selling?

4:Growing outdoors and selling?

I would love to know what the laws are on the four above questions thanks you.

there is only 1 law....
DONT GET CAUGHT

i know not to get caught but what happens if i do get caught doing the following four?

1 and 2 if you had more than one plant you'd probably be charged with possession and intent to supply. 3 and 4 you'd be charged for the supply of controlled substances and possession. Just don't get caught.

Indoors/outdoors makes no difference, as Calmoo said more then one plant is enough for possession with intent to supply even if you're only growing for yourself.
Stay safe and tell nobody your growing.
As for selling, i would have thought it was obvious, you would be selling an illegal drug in the eyes of the law and you would be subjected to the full riggers of the courts.

My friend, unfortunately on our isle it's a postcode lottery. You might find an officer who wont mind your one plant, or you could find an officer who will find one plant and call in the helicopters to scan local fields...

They're all illegal but so long as it's for personal use then you're sweet(er). Just don't keep a load of zip lock baggies and scales etc etc. Why would one user need 500 bags and a scale?