Aveillant Radars (who are owned by Thales UK since 2017) are another, not well known, UK manufacturer, but a quiet success nevertheless. They specialise in small, fixed, radars that are used as gap fillers for Air Traffic Control or Counter UAS at airports, CNI etc. Their products are designed for long duration, very low maintenance operation. They're used, discretely, at a lot of major airports both in the UK and worldwide.
https://www.aveillant.com/
Aveillant Gamekeeper 16U on the left, and Aveillant Theia 16A on the right.
