Ansari has been filling the role on an interim basis for the past four months and oversaw the launch of the charity’s new brand.
This comes after the departure of fundraising and comms director Andy James to join the Civil Service Benevolent Fund in the same position.
Ansari has previously held senior comms positions at a number of organisations, including the British Embassy in Spain, the Council of Europe and Lambeth Council.
Barbara Young, chief executive of Diabetes UK, said: ‘The appointment of Louise marks a real focus at Diabetes UK on the need to raise the awareness of diabetes massively to ensure that it gets proper attention as the most serious health challenge of our times. We look forward to working with her on our new approach to comms.'
Ansari said: ‘The launch of the new brand marks the start of a big comms journey for Diabetes UK and, having overseen its launch, I am delighted that as permanent director of comms I will now be able to see that journey through.’
Diabetes UK now wants to raise the profile of diabetes, a condition that is poorly understood despite affecting about 3.7 million people in the UK and accounting for about ten per cent of the NHS’s budget.
'We want to push diabetes much higher up the agenda, because by raising its visibility we can improve the lives of people who are living with it,' Ansari added.
'By putting pressure on the Government and NHS to improve healthcare and by making people aware of how they can better manage their own condition, we can use communications to reduce the number of preventable complications in people with diabetes and ultimately the rates of early deaths.’
Diabetes UK’s plans for the coming months include a campaign about foot care, which aims to reduce the number of amputations, a serious complication of diabetes.