Angular correlation in the two-electron continuum of the helium double photoionization S. Cvejanovi\'c$^\dagger$, J. P. Wightman$^\dagger$, T.J.Reddish$^\dagger$, F. Maulbetsch$^\dagger$, M. A. MacDonald$^\ddagger$, A.S. Kheifets$^\star$ and I. Bray$^\sharp$ $^\dagger$Physics Department, The University of Newcastle, Newcastle-upon-Tyne NE1 7RU, UK $^\ddagger$CLRC, Daresbury Laboratory, Daresbury, Warrington WA4 4AD, UK $^\star$Research School of Physical Sciences and Engineering, Australian National University, Canberra A.C.T. 0200, Australia. $^\sharp$Electronic Structure of Materials Centre, Flinders University of South Australia, GPO Box 2100, Adelaide S.A. 5001, Australia Angular correlation in the two-electron continuum of the He double photoionization has been studied, both experimentally and theoretically, at equal and unequal energy sharings at the photon energies of 20 and 40~eV above the threshold. Good agreement has been found between theory and experiment in most cases except for the unequal energy sharing when one of the escaping electrons is detected in the direction close to the polarization axis of the linearly polarized light