You should check your visa when you get it. You should make sure that:
• your personal details are correct
• it correctly states the purpose for which you want to come to the UK, and
• it is valid for the date on which you want to travel. (You can ask for it to be post-dated for up to three months if you do not plan to travel immediately).
If you think there is anything wrong with your visa, contact the visa section immediately.

If you are in the UK when you notice there may be a problem with your visa, please contact:
NCC2 EC ERRORS
9th Floor Lunar House
40 Wellesely Road
Croydon
CR9 2BY