advice on moving from senior contributor to management? Training and Course recommendations

I’ve been a senior data analyst for about four years now, and my director has hinted that I’m next in line for a Head of Data or Analytics role when our current lead goes on maternity leave later this year. I know the technical side inside out, but I have zero formal management experience. My company has offered to pay for a leadership course to help me prepare. I’ve been looking into the British Academy For Training & Development for their leadership and management training, as they seem to have some good executive education options here in the UK that focus on the actual business side of thi