1 INTRODUCTION  
2 OBSERVATIONS  
2.1 NGTS photometry  
2.2 TESS photometry  
2.3 SPECULOOS photometry  
2.4 SAAO photometry  
2.5 HIRES spectroscopy  
2.6 UVES spectroscopy  
3 ANALYSIS  
3.1 Radial velocities  
3.2 Global modelling  
3.3 Light curves  
3.4 Spectral energy distribution  
4 RESULTS  
5 DISCUSSION  
5.1 Mass–radius relation for low-mass EBs  
5.2 Context  
5.3 Comparison with stellar evolution models  
5.4 Activity  
5.5 Age of NGTS J0002-29  
5.6 Distance to NGTS J0002-29  
5.7 Differences between using BT-Settl and PHOENIX atmosphere models  
5.8 Another EB in Blanco 1?  
6 CONCLUSIONS