VFP is a CFD (computational fluid dynamics) method coded in FORTRAN for calculating the flow field and aerodynamic forces of an isolated wing (denoted usually as a wing-alone) or a wing-body combination (denoted usually as a wing-body) in a subsonic freestream@ including the effects of shock waves and boundary layers. VFP uses a relaxation process to solve finite-difference forms of the full nonlinear velocity-potential equation for the flow around the three-dimensional geometry. The viscous effects are modelled using a coupled semi-inverse swept tapered integral boundary-layer method. The VFP program was developed over a period of years at ARA@ Bedford and RAE/DERA (now QinetiQ)@ Farnborough@ and is made available by ESDU under the terms of an agreement with QinetiQ. Used originally on mainframe computers@ VFP has provided valuable data in the design of a number of aircraft. With advances in computers@ it has become possible to perform runs of VFP on a PC within a few minutes. One of the advantages of the VFP method is to provide a rapid process to produce valuable data to assess the aerodynamic qualities of wings as part of the design process.