Arm A: SOC ACT
tumour
TUMOUR
Patients randomised to SOC chemotherapy will be recommended 3 months of CAPOX or 6 months of capecitabine monotherapy by their clinician depending on histopathological features of their resected tumour and clinical situation. Post-operative (Month 0) and serial blood samples for ctDNA will be biobanked and processed at a future date. Patients in the SOC arm will not receive ctDNA results in real time.