A broad review of coordination chemistry of the larger calixarenes by Redshaw in 2003 demonstrated how the field had developed to that point, identifying a wide range of potential routes of investigation. Despite the number of species covered in this review, the coordination chemistry of H8TBC [8] may still be considered embryonic. Work in our labs has begun for a systematic study of the 3d and 4f ions, the results from which will be reported in due course. Ready access to other large(r), odd and even-numbered HnTBC[n]s on a useable scale will also be pursued, as these ligands offer fascinating opportunities depending on ring size, preferred conformations, etc. However, it does not always follow that larger ligands will deliver larger clusters, an example being that H16TBC [16] adopts a pseudo-spherical conformation in the solid state due to folding and ring size (with phenolic groups all pointing inwards). This feature may hinder large cluster formation, so one must consider many factors when attempting to systematically programme the assembly of such complex systems. Nevertheless, calix[n]arene coordination chemistry remains a fascinating area for scientific exploration, and we hope this review stimulates activity in the area.