cliff_the_gardener wrote:

I am going for a Mahonia - yellow flower spikes followed by the purple
berries.

Mahonia berries are far more rounded without such a prominent
receptacle. Of the species most widely seen in the UK, the glaucous
'bloom' covering their black berries makes them appear a distinctive
blue. Looking at the leaf as well, it doesn't speak Mahonia.

This is a typical fruiting spike of the female form of Garrya
elliptica. The male form is most frequently grown on account of its
much longer 'catkins', which in the variety 'James Roof' can exceed
25cms.. It is a stalwart of the winter scene, 'dripping' with silvery
green catkins from December through to March. The female form with its
much shorter, less showy 'catkins' is less sought after and so its
fruits may be unfamiliar to many who grow this shrub.