You must ensure that the correct fee is included with your application to prevent your application from being rejected. If you are already registered or have an application pending and are applying to add more tiers

This era Home Office began the compress of their points-based system – the biggest shake-up of our immigration system for 45 years. At the end of November Home Office will be launching the new point base system. Under the points-based system, employers will need a sponsor licence to bring in skilled or temporary workers from outside the European Economic Area or Switzerland.

Indefinite Leave To Remain in the UK or ILR UK is the permission for UK Permanent Residency or UK Settlement. Indefinite Leave To Remain in UK is granted based on your continuous length of stay in the UK under eligible categories such as HSMP or Tier 1 and Work Permit or Tier 2. If your HSMP was approved before 3 April 2006, you would be eligible for Indefinite Leave To Remain after 4 years continuous stay in the UK as against 5 years required under current Immigration Rules 

You can apply for a Tier 5 (Youth Mobility Scheme) visa,

You may be able to extend your visa as long as the total time you spend in the UK is less than 6 months – For example: if you apply for a 3 month visa, you can apply to extend it for 3 more months. You should apply before your current visa expires.