  Ultra-hot Jupiters (UHJs) present excellent targets for atmospheric
characterisation. Their hot dayside temperatures (T $\gtrsim$ 2200 K) strongly
suppress the formation of condensates, leading to clear and highly-inflated
atmospheres extremely conducive to transmission spectroscopy. Recent studies
using optical high-resolution spectra have discovered a plethora of neutral and
ionised atomic species in UHJs, placing constraints on their atmospheric
structure and composition. Our recent work has presented a search for molecular
features and detection of Fe I in the UHJ WASP-121b using VLT/UVES transmission
spectroscopy. Here, we present a systematic search for atomic species in its
atmosphere using cross-correlation methods. In a single transit, we uncover
potential signals of 17 atomic species which we investigate further,
categorising 5 as strong detections, 3 as tentative detections, and 9 as weak
signals worthy of further exploration. We confirm previous detections of Cr I,
V I, Ca I, K I and exospheric H I and Ca II made with HARPS and ESPRESSO, and
independently re-recover our previous detection of Fe I at 8.8 $\sigma$ using
both the blue and red arms of the UVES data. We also add a novel detection of
Sc II at 4.2 $\sigma$. Our results further demonstrate the richness of UHJs for
optical high-resolution spectroscopy.
