Some recent publications:

G.D.Hammond, C.C.Speake, C.Trenkel and A. Pulido Paton 'New Constraints on short-range forces coupling mass to intrinsic spin'. Physical Review Letters 98, 081101 (2007).

C.C.Speake 'Newton's constant of gravitation and the 21st Century laboratory' Proceedings of the Royal Society A, 363 p2097-2327 2005.

C.C.Speake and S.M.Aston 'An interferometric sensor for satellite drag-free control'. Class. Quantum Grav. 22, S269-S277 2005

C.C.Speake, G.D.Hammond and C.Trenkel. 'The feasibility of testing the the inverse square law at Newtonian strength and at mass separations of 1μm' General Relativity and Gravitation, 36, 503-521 2004.

G.D.Hammond, A. Pulido-Paton, C.C.Speake and C.Trenkel. 'Novel torsion balance based on a spherical superconducting suspension' Review of Scientific Instruments, 75 p955-961 2004.

T.J.Quinn, C.C.Speake, S.J.Richman, R.S.Davis and A.Picard. 'A new determination of G using two methods'. Phys. Rev. Letts. 87, 111101 2001.

C.C.Speake and C.Trenkel 'Forces between conducting surfaces due variations of surface potential'. Phys. Rev. Letts 16, 160403 2003.