If you are paying for your appointments yourself, the fee per session is £100.  I usually ask for payment to be made at each session, but sometimes enter into  a different agreement, where that is agreeable to us both.  Payments can be made by bank transfer.

I ask for 24 hours notice to cancel an appointment.  Within 24 hours of an appointment, or if the appointment is missed, half of the normal appointment fee is  charged.