John Wylie’s Tanarra Capital has urged Healius, the pathology giant where it is one of the largest shareholders, to abandon the planned sale of its Lumus radiology business, lauding the division’s turnaround in profitability.

The firm has previously criticised the management of Healius, known as Primary Health Care until 2018, the country’s second-largest provider with 2000 collection centres, 95 laboratories and 150 imaging sites.