2 ids, 3 comments.
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It is the same family as honeysuckle but does not flower.
Probably Lonicera nitida which has very small flowers if you look carefully.
Many thanks for your comments. Having had a look at my key (Rose's Wild Flower Key, revised), I see that Lonicera nitida looks very likely indeed and so am going with that.
Lat/Lng: 57.16, -2.2
OS grid ref: NJ880076