Companies rang the changes in early 2016 as three chief executives stepped down.
Daily Mail publisher DMGT (LON:DMGT) announced that its chief executive Martin Morgan is retiring at the end of this year.
Morgan has been with the newspaper and online group for 27 years and took up his present role in 2008.
The company is launching a search for his replacement and candidates reportedly include finance director Stephen Daintith and Suresh Kavan, who has led Morgan’s old unit DMG Information since 2008.
News distribution and airport ground handling group John Menzies (LON:MNZS) said chief executive Jeremy Stafford had tendered his resignation for personal reasons.
In November last year, Menzies warned on annual profits after incurring £6mln of extra costs at Gatwick airport to correct operational issues.
Elsewhere, African airline Fastjet (LON:FJET) said chief executive Ed Winter was stepping down, but would stay in his post until a successor is appointed.
Winter has presided over Fastjet's expansion including opening hubs in Tanzania and Zimbabwe and providing multiple domestic services.
He has also overseen the airline's success in winning international rights to fly from Tanzania to South Africa, Zambia, Zimbabwe, Uganda, Malawi and Kenya.
However, challenges have included funding, legacy and competition issues, as incumbent flag carriers resisted rivals encroaching on their traditional routes.
African airlines are also facing difficulties caused by the downturn in the mining industry, which has hit demand for business travel.
Fastjet chairman Colin Child said: "Over the past four years, Ed has made significant and sustained progress towards Fastjet's goal of becoming Africa's first true low-cost pan-African airline."