Old John the upper floor, and is open to visitors on the park's guided walk programmes. In 2001, Bradgate Park Trust registered the design of the building as a trademark, and in 2018 told a local artist that she would have to pay them if she continued to sell her paintings of it. Adjacent to the tower is a toposcope installed in 1953. This was installed by the people of Newtown Linford from money raised at the 1953 'Pageant of Lady Jane Grey', performed to celebrate 400 years since she was proclaimed Queen of England. Old John Tower occupies the north-eastern end
Henry Grey, 1st Baron Grey of Groby attainder. Those in Leicestershire centred on Bradgate House in its manor of Groby, a few miles from Leicester. As the new Lord Grey of Groby, aged 58, he took up residence at Bradgate and devoted most of his energies to strengthening his family's position in the County. This included reviving the feud and intense competition between the Greys and the Hastings earls of Huntingdon which had enlivened and divided Leicestershire for much of the early sixteenth century. Grey married Anne (1542–1613/14), daughter of William, 2nd Lord Windsor of Bradenham, Buckinghamshire. Henry and Anne had four sons and two daughters including: