In the latest episode of our podcast Acting Prime Minister, we are sending someone through the door of Number 10 who has spent a significant amount of timing banging on it - not a politician, but someone who has devoted her life to lobbying them.
Hannah Deacon was thrown into politics not by choice but by necessity, campaigning for her son Alfie Dingley to get life-changing drugs. His epilepsy meant he had fits up to 150 times a week, until the family moved to Holland to try medicinal cannabis.
As Hannah explains to ITV News Political Correspondent Paul Brand in this interview, for many, getting the treatment is still proving virtually impossible - so it's no surprise that Hannah's personal struggle would define her time as Acting Prime Minister.
Catch up with past episodes of Acting Prime Minister: