For A Private Doctor Appointment: Qured
This app gives you access to a medical professional seven days a week, around the clock and at a location of your choice. Currently operating within Greater London only, Qured provides a direct link to a doctor, so you can receive instant medical advice as well as prescriptions. If your ailment is sports related, it offers muscular rehabilitation services from a team of fully qualified physios. Appointments are accessible within two hours and start at £90.
Download it from Apple or Google