Unknown tree

As you can see this tree has a strange type of fruit, it looks as if it is netted.   The tree grows in the graveyard at Easebourne Priory, near Midhurst, West Sussex where I went with fellow blipper, Paola and where we met Brens who also blips.   We had a great afternoon looking at the Priory, chatting and having a delicious tea at the Cowdray Tea Rooms.
Does anyone know the name of this tree?