There was a medieval church on the site , which was almost entirely demolished in the 1860s .
The present exterior is largely Phipson 's , though inside the nave arcades and various monuments and fittings are retained from the original .
There was a medieval church on the site , which was almost entirely demolished in the 1860s , so that the present exterior is largely Phipson 's , though inside the nave arcades and various monuments and fittings are retained from the original .