The NHS General Medical Services (GMS) Contract specifies that by the end of the financial year Practices must publish mean earnings for all GPs in their practice relating to the previous financial year (i.e. 2014/15).
All earnings reported are pre-tax, National Insurance (NI) and employee pension contributions and for contractors the figures are net of practice expenses incurred. This must include earnings from NHS England, CCGs and local authorities (for the provision of public health services) for the provision of GP services that relate to the contract or which have been nationally determined (i.e. those that would have previously been commissioned by PCTs following direction by NHS England or the Department of Health).
This information for Fountain Medical Centre can be seen here.