Clause 1 of the Bill will amend the definition of terminal illness in existing primary legislation, which is based on someone having six-months or less to live, by replacing it with a new 12-month definition. This Clause will also amend the definition of terminal illness, within the Universal Credit, Personal Independence Payment, Jobseeker's Allowance and Employment and Support Allowance (Decisions and Appeals) Regulations 2013, which is currently based on someone having six-months or less to live, to align with the new 12-month definition.