The hours you are permitted to work will be clearly indicated on:
- The vignette in your passport (the yellow sticker)
 
- Your Biometric Residence Permit (BRP)
 
As a Student Route visa holder the types of work you can undertake are:
- paid, unpaid and voluntary work
 
- Paid and unpaid work placements undertaken as part of a course of study or period of study
 
Student Route visa holders are restricted from the following:
- self-employment                   
 
- engaging in business activity
 
- Providing services as a professional sportsperson or entertainer
 
- Take a full time, permanent position
 
UKVI also confirms that 'paid and unpaid work placements undertaken as part of a course of study' are separate from 'paid or unpaid employment', so can be done simultaneously.