im in the uk and doin exactly wot u want to do...
i have 2 plants, which i hope will be female under 250w hps in my closet...
take a look -
http://forum.grasscity.com/grow-jour...oset-grow.html
the way to do it is
1st, make sure your housemates are cool with it... they will find out,
make sure the light cant be seen from outside (esp. hps)...
make sure u know if/when ur landlord/estate agent come round to check the house and make prvisions to get ur babies out (i.e. stick em in ur flatmates car...
the good thing here is they have to give you 24 hours notice if they want to come into the property...

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hope that helps

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