In order to achieve ILR through the Tier 1 Entrepreneur visa route, you must satisfy the Home Office’s ‘continuous residence’ requirements. As an existing holder of the Tier 1 Entrepreneur visa, you must have been living in the UK for three years or five years by the time you apply to settle in the UK, with the exact wait depending on the jobs and income you have created.
During your time of continuous residence, you can only be outside the UK for up to 180 days during any 12 months. In making your ILR application, you will be required to list details of your absences from the country, including your reasons for these absences.
If you have spent more than 180 days outside the UK in any consecutive 12-month period, this will break the continuous leave period, meaning you will need to start the qualifying period for settlement again. This may necessitate you seeking an extension of your Tier 1 Entrepreneur visa so that you can reach the required continuous period in the UK.