BT Home Hub key in standard configuration is hacked in 2 minutes anyway. Especialy if you see it show up on your list like this: "BTHomeHub-8SF5-random something". Try the BTHHkeygen.
But is this this whole thread a joke or are people really getting scared of their neighbours and liability and laws and stuff? In that case I'm going to cry for a little bit now. What was it again about good neighbours and far away friends (or is that just a Dutch expression)?
You'll have a good laugh about this over coffee with your neighbour in a few months hopefully.
Your internet neighbour: Almer