Normally I, as would many others, associate churches and places of rest with evergreen trees. Certainly they have got the familiar range of those planted but more unusually these sit along side less expected specimens.
This is a Manna Ash- the patterns on the trunk are due to its grafting
Chatting to others on the tour some were already volunteers in a now redundant cemetery in Worthing- they had actually come up to gain inspiration for the wild life ground maintenance aspect for their own area. If you do get the chance to attend one of these it's certainly worth considering.