Microcells tend to be two sector. Antennas are Kathrein and it is possible to see that they have an O2 label on them which is likely due to BT
and O2 starting cellular rollout in the the country.
The cabinets near the base of the lamp post. Left is an Alifabs power cabinet and the right is a Huawei
BTS3900a.
The tag's 'U21' indicates what it was initially intended to broadcast.