This shows influence of the Late Saxon Winchester Style, Group E1 of Thomas (2000).
"The style, which has its roots in south and south-east England, appears on a range of media including metalwork, sculpture and illuminated manuscripts dated to the 10th and 11th centuries. The most important motifs associated with the style, as manifest on metalwork, are the inhabited plant-stem and pure foliage. The former is characterised by the depiction of pairs of confronted, naturalistic birds and/or animals which inhabit a central plant stem."
Hammond (2013), British Artefacts vol 3, Fig.1.3-i is similar.