CORONER Warner Banks has enlisted a top legal firm to challenge allegations he sub-let his government flat. The Judiciary panel investigating the matter has drawn up a precise charge which Mr Banks is replying to, it was revealed yesterday. His solicitor David Morrison, of international law firm Richards Butler, refused to disclose the nature of the charge. Insiders confirmed the complaint related to allegations Mr Banks sub-let his flat to former girlfriend Chris Macartney whom he has since married. The coroner, who earns between $71,265 and $88,400 a month, contributes 7.5 per cent of his salary as rent to the Government on the apartment in Mount Nicholson Road. Mr Morrison said the charge was one complaint, but combined a number of allegations. 'The charge has been presented to us. We are looking at the specific allegations and making a number of submissions in respect of the adequacy of the allegations and whether they are appropriate.' The inquiry is being conducted according to the Colonial Regulations which has caused problems. Mr Morrison added: 'It's very rare proceedings are brought under Colonial Regulations . . . They are quite archaic.' Governor Chris Patten has been consulted about the case in accordance with the regulations. Under the regulations the Governor may be asked to decide if the alleged misconduct is serious enough to warrant dismissal. Inquiries into alleged misconduct by public officers are normally conducted under Civil Service Regulations which would not usually involve the Governor.