Some Overseas Student Travel Insurance (ICICI Lombard) available with a continuous cover for 2 years (auto-renewals), so you don't need to renew it after one year and thereby covering your entire period of study without extension hassles.

Some extra coverage under ICICI Lombard's Overseas Student Travel Insurance Plan -
1- Lost fees if you are unable to complete your course
2- Costs of returning home if a relative is ill
3- Costs of a relative visiting you in the UK if you fall ill

4- Cost of returning to your home country for treatment
5- Or in the worst possible situation, returning a body home for burial.