This petition was rejected

The Government e-Petitions Team gave the following reason:

The Government has already announced plans to allow the safe future mass rollout of a Covid-19 vaccine, including by clarifying arrangements that enable the licensing authority to temporarily authorise the supply of an unlicensed medicinal product for use in response to certain specific types of public health threat: www.gov.uk/government/consultations/distributing-vaccines-and-treatments-for-covid-19-and-flu/consultation-document-changes-to-human-medicine-regulations-to-support-the-rollout-of-covid-19-vaccines

The Government has also stated that it remains open to the possibility of making further changes very rapidly, if need be.