No, where a negative test status is an official condition for onward travel a single positive LAMP test has been confirmed by the relevant authorities as a valid reason for preventing immediate travel to that destination. It is also recognised by Public Health England (PHE) as sufficient notification of COVID-19 and as such by law it will be necessary to notify them of your test status. After returning to your accommodation to self-isolate, you may be able to register for a follow up test under the National Health Service (NHS). Additionally, the NHS track and trace programme may contact you to ensure you have self-isolated.