This paper is a sequel to [6]. In that paper we transferred the discussions
in [1] and [13] concerning almost invariant half-spaces for operators on
complex Banach spaces to the context of operators on Hilbert space, and we gave
easier proofs of the main results in [1] and [13]. In the present paper we
discuss consequences of the above-mentioned results for the matricial structure
of operators on Hilbert space
