1 INTRODUCTION

2 VLBI DETECTION RATE VS RESOLUTION

3 OBSERVATIONS AND DATA REDUCTION

3.1 $e$-MERLIN SPARCS-North

3.2 $\mathbf{EN+}\,e$-MERLIN observations

3.3 VLASS SPARCS-North

3.4 Data processing

3.5 Primary beam corrections

3.6 Imaging and source extraction

4 RESULTS, ANALYSIS AND DISCUSSION

4.1 No taper imaging

4.2 5M 𝜆 tapered imaging

4.3 Astrometry

4.4 Tapered image non-detections

4.5 Multi-resolution flux density comparison

4.6 Compact sources vs. extended radio sources

4.7 AGN variability

5 SERENDIPITOUS DISCOVERY?

6 CONCLUSIONS