On a question of Blackburn.
(With John R. Britnell, Robert M. Guralnick, Maria S. Lucido, and Andrea Lucchini) In preparation.

The non-coprime k(GV)-problem for primitive linear groups.
(With Robert M. Guralnick) In preparation.

Pairwise generation of the profinite completion of SL(n,Z).
(With Andrea Lucchini and Darren Semmen) Preprint.

Covering and generating sporadic simple groups.
(With Petra E. Holmes) Submitted.

On groups with all normal subgroups transitive or semiregular.
(With Aron Bereczky). To appear in Journal of Algebra.

Sets of elements that pairwise generate a linear group.
(With John R. Britnell, Anton Evseev, Robert M. Guralnick, Petra E. Holmes).
To appear in Journal of Combinatorial Theory Ser. A.

Symmetric functions, generalized blocks, and permutations with restricted cycle structure.
European Journal of Combinatorics 28 (2007), no. 3, 942–963.

A proof of a generalized Nakayama conjecture.
Bulletin of the London Mathematical Society 35 (2006), no. 5, 777–785.

On generalized blocks for alternating groups.
Journal of Algebra 297 (2006), no. 2, 400–408.

Bounding the number of conjugacy classes of a permutation group.
Journal of Group Theory 8 (2005), no. 3, 273–289.

Covering the symmetric groups with proper subgroups.
Journal of Combinatorial Theory Ser. A 110 (2005), no. 1, 97–111.

On elementary lower bounds for the partition function .
Integers (Electronic Journal of Combinatorial Number Theory) 3 (2003), 9 p., electronic only.

On the orders of primitive groups.
Journal of Algebra 258 (2002), no. 2, 631–640.