#1 is not true.Under what statute or provision of the common law is it illegal to die anywhere, let alone the Houses of Parliament ? Who'd be prosecuted? The idea has, perhaps, come from what happens if an MP dies in the House. The House is part of a Royal Palace, 'the Palace of Westminster' and there's a right palaver if someone dies in a Royal Palace and so, unless they happen to be royalty, the fiction is employed that they died elsewhere, usually in whatever hospital their body were taken to . Then any inquest is held by the usual coroner for that place and and all the legal formalities of registration of death etc conducted on that basis. This fiction has been employed in every recent case of a death in Parliament.
# 8, is true if as stated above, it's read humorously. It provides an example of one of the very few instances in our law where there's no privilege against self-incrimination and there's no right to remain silent.You are obliged, by law, to answer the taxman!