To remove cache you will need to select the menu icon in the top right corner. You will then need to select the settings option at the bottom of the list.
Under the privacy settings select ‘Delete browsing data’. You will have the option to select which area of private data you would like to remove. If you would like to remove cache alone you will need to ensure that the other tabs are turned off. If the tabs are off the box will be empty, if they are on they will have a tick.
Once you have selected ‘Cache’ you will need to select ‘Delete browsing data' at the bottom of the page.