There can be different scenarios where one’s leave has expired, if you have overstayed, it is important to make an application as soon as possible to the Home Office in order to keep your status in the UK and/or resolve your problem of overstaying and the issues with regard to this.
Also it could be the case where you would like to resolve these issues, whilst remaining in the UK. Generally, as long as an application is made before 28 days of you overstaying in the country then your application will be likely to be accepted under section 3C of the Immigration Act 1971.
If you have a problem regarding you overstaying in the UK, then Tremont Midwest are here to help you. Please give us a call if you require further information.