Lace web spider

Lace web spider

Observation - Lace web spider - UK and Ireland. Description: Found in the corner of the frame of a garden shed window pane (dismantling same)in a South Wales urban garden. It was not too concerned regarding disturbance. Web destroyed in process so unable to describe this. Looking through the books and internet it

Found in the corner of the frame of a garden shed window pane (dismantling same)in a South Wales urban garden. It was not too concerned regarding disturbance. Web destroyed in process so unable to describe this.
Looking through the books and internet it seems very difficult to determine whether this is A. similis or A. fenestralis - so I've only id'd to genus level. Any correction or help is great appreciated.