It is not illegal to die in the Houses of Parliament

It is not illegal to die in the Houses of Parliament

Despite popular belief, it isn’t illegal to die in the Houses of Parliament. Although it is illegal to enter the Houses of Parliament wearing a suit of armour. According to gov.uk:

‘The issue of dying in Parliament appears to arise from the idea that anyone who dies in a Royal Palace is eligible for a state funeral. We have not been able to trace any such law, and neither have the House of Commons authorities.’

It is not illegal to die in the Houses of Parliament

Prohibition of death is a political social phenomenon and taboo in which a law is passed stating that it is illegal to die, usually specifically in a certain political division or in a specific building.
The earliest case of prohibition of death occurred in the 5th century BC, on the Greek island of Delos; dying on Delos was prohibited on religious grounds. 

Today, in most cases, the prohibition of death is a satirical response to the government's failure to approve the expansion of municipal cemeteries. In Spain, one town has prohibited death; in France, there have been several settlements which have had death prohibited; whilst in Biritiba Mirim, in Brazil, an attempt to prohibit death took place in 2005.
 
There is a falsely rumored prohibition on recording deaths in royal palaces in the United Kingdom, for rather different reasons.