WARNING: This page is about a different car, the 2002 Jaguar XKR and 2002 Jaguar XK8. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Quick Fit Connector Release Tool 310-044
Courtesy of JAGUAR CARS, INC.
Fig 2: Identifying Quick Fit Connector Release Tool 310-054