  A bimetric gravity model with a variable speed of light is shown to be in
agreement with the results reported from the Planck satellite in 2013. The
predicted scalar mode spectral index is $n_s\approx 0.96$ and its running is
$\alpha_s\approx 8\times 10^{-4}$ when the fundamental length scale $\ell_0$ in
the model is fixed to be $\ell_0\approx 10^5\ell_P$, where $\ell_P$ is the
Planck length $\ell_P=1.62\times 10^{-33}\,{\rm cm}$, giving the observed CMB
fluctuations: $\delta_H\approx 10^{-5}$. The enlarged lightcone ensures that
horizon and flatness problems are solved. The model is free from many of the
fine-tuning problems of the inflationary models and the fluctuations that form
the seeds of structure formation do not lead to a chaotic inhomogeneous
universe and the need for a multiverse.
