Tier 1 Employee Stock Options

Hi,

Currently, I am in the UK on WorkPermit Visa. I am planning to switch to Tier 1. But had a question regarding previous earnings.
Apart from my salary, I have receive some stock options from my company which I can exercise every year. My company is listed on Mumbai Stock Exchange in India. I get my company stocks at a much cheaper price. I have to pay applicable tax in India for this. My question was: can this be used as an addition to previous earnings pls?

If yes, what price should be used?
The share price on the date on which I can exercise the stock? (Vested price)?
Or the hare price on which I exercised the stock (Exercise price)?
or Should I sell it, and show the difference between purchased price and selling price.


Request you to pls reply, as the addition of my salary and the stock options would give me my necessary earnings as per points based system

Thanx.