You will normally be expected to pass all the units you have taken before you can proceed to the next academic year. However, compensation may be possible if you fail a unit by a small amount, when the examiners may allow you an overall “compensated pass” (see Section Pass marks and compensation rules (Level 1) (Level 2). Otherwise, all units failed must be re-taken during the August/September examination period (see Section August/September referrals).
You may not normally start the next academic year of your degree programme until you have passed the Examinations in your current academic year, so failure again in August/September may lead to you being excluded from further courses and examinations in the School of Biological Sciences.