Background theory.- The imprimitive soluble subgroups of GL(2, p k ).- The normaliser of a Singer cycle of prime degree.- The irreducible soluble subgroups of GL(2, p k ).- Some irreducible soluble subgroups of GL(q, p k ), q>2.- The imprimitive soluble subgroups of GL(4, 2) and GL(4, 3).- The primitive soluble subgroups of GL(4, p k).- The irreducible soluble subgroups of GL(6, 2).- Conclusion.- The primitive soluble permutation groups of degree less than 256.