No interactions present.
The fruits look like the ones seen on stag horn trees however the leaves are wrong for that too.
It is some kind of import, being close to a very old sea port would make this likely.
The "flowers" look very much like this (http://www.diversityoflife.org/imgs/jdelaet/r/Oleaceae_Fraxinus_excelsio...) -"Deformed inflorescences, deformations caused by Aceria fraxinivora"
The buds are black like ash, and the leaves look like several 'Diversifolia' examples that I can find on the internet, including http://www.diversityoflife.org/imgs/kcn2/r/Oleaceae_Fraxinus_excelsior_8... and http://gardenbreizh.org/photos/Oli/photo-29153.html
Lat/Lng: 51.4814431, -0.227096
OS grid ref: TQ232773