The City of London Police maintains a mounted police unit. In addition to regular duties, the horses of the mounted unit has been used to trample wildflower seeds at the Barbican Wildlife Garden at the request of the community wildlife gardeners. The horses' ceremonial duties include participation in Trooping the Colour and the Lord Mayor's Show; the City of London Police mounted unit also escorted the exhumed remains of King Richard III through the city of Leicester from St Nicholas Church to Leicester Cathedral, en route to their reburial.