By Liz Hall Internal coaching has helped Grant Thornton shift to GROW from what its head of development described as 'GROAN', improving its previously "very mixed" leadership capability. Joanne Long, head of development at the accountancy firm, said its coaching programme delivered with OCM has improved leaders' interpersonal and coaching skills and reduced spend on external coaching, although she said it was impossible to locate the spend. Long mapped out the business's coaching strategy against the GROW model, contrasting this with the GROAN model: "Gripe...