SK 3329 10 February 2022: 7 very high res. images.
Location: Central Park, Romford, UK
Altitude: 40 m.
Date: 10 February 2022
Habit : Cultivated
Mahonia aquifolium (Pursh) Nutt. ??
To me appears close to images at Mahonia napaulensis
I guess Berberis napaulensis (DC.) Spreng. has got no distribution in UK unless it is introduced and cultivated.
Mahonia x media ‘Charity’ is a likely candidate depending on the scent of the flowers and the time of flowering. It is widely grown in parks and the colour of flowers and shape of leaves matches this.