We extend our previous exotic cluster treatment of heavy even-even nuclei by modelling 223Ra as a 208Pb + 14C + n system. The neutron occupies 1 g 9 2 , 0i 11 2 , 0j 15 2 , 2d 5 2 , 3s 1 2 , 1g 7 2 and 2d 3 2 states with energies taken from the known spectrum of 209Pb, while the 14C cluster occupies 0 +, 2 +, 4 +, … or 1 −, 3 −, 5 −, … states whose energies are taken from the known levels of 222Ra. The 14C-n interaction mixes together the various combinations of neutron and 14C orbital motion states coupled to total angular momentum I. Diagonalization of the Hamiltonian matrices for each I-state then yields energies and eigenvectors for comparison with experimental data. Once the Pauli principle has been satisfied by excluding the odd neutron from orbitals already occupied by neutrons in the 14C cluster we generate low-lying bands with K π values (in order of increasing energy) 3 2 + , 3 2 + , 5 2 + , 5 2 + , 1 2 + and 1 2 + . We calculate strong E2 transitions (∼100 W.u.) within a given band, and much weaker ones (≲1 W.u.) between different K-bands. We give a good account of the relatively strong E1 transitions between bands of equal K but opposite parity (≲0.001 W.u.) and the much weaker ones (<10 −4 W.u.) between opposite parity bands with different values of K. Our description of in-band M1 transitions is in good accord with the data, and we predict equally strong cross-band transitions. Our calculation indicates that the ground state of 223Ra is constructed principally from a 0i 11 2 neutron coupled to the 208Pb 14C relative motion, in qualitative agreement with the observation that the exotic decay of 223Ra goes preferentially to the first excited state of 209Pb with spin 11 2 + .