Any student sitting an exam or course test must comply with University regulations covering conduct in exams. It is worth familiarising yourself with these as they may differ from those in force where you may have studied previously, because breaches of these regulations can have serious consequences including marks penalties and, ultimately, disciplinary action.
For more information see : https://uea.su/pageassets/postgraduate/postgraduateadvice/conduct-in-exams/Conduct-in-Exams-A4.pdf
The full regulations on conduct in exams can be found at:
https://portal.uea.ac.uk/documents/6207125/7465906/Section+3+General+Regulations+for+Students.pdf