Yes, if you need to interrupt your studies or withdraw from your programme this will likely have an effect on your Tier 4 visa.
If your interruption is for 60 days or less, it may be possible for your Tier 4 visa to continue and for you to remain in the UK although this is not always the case.
All interruptions of more than 60 days must be reported to UK Visas and Immigration. Your visa will be shortened to 60 days from the date of the report and you will need to leave the UK for the duration of the interruption and apply for a new visa to return.
Detailed information about your visa and interruptions is in the Visa Conditions section of our website.
Withdrawals are reported to UK Visas and Immigration. Your visa will be shortened to 60 days from the date of the report. You will need to leave the UK within that time period or make a new visa application (for example, a new Tier 4 application because you are transferring to another university).
For detailed advice on your particular situation, please log an enquiry and one of our trained immigration advisers will help.