Is the Bremer Deep Field ionised, at z~7?
  We show herein that the population of star forming galaxies in the Bremer
Deep Field (BDF) have enough ionising power to form two large ionised bubbles
which could be in the process of merging into a large one with a volume of
14000 cMpc3. The sources identified in the BDF have been completed with a set
of expected low luminosity sources at z $\approx$ 7. We have estimated the
number of ionising photons per second produced by the different star forming
galaxies in the BDF. This number has been compared with the number that would
be required to ionise the bubbles around the two overdense regions. We have
used, as reference, ionising emissivities derived from the AMIGA cosmological
evolutionary model. We find that even using the most conservative estimates,
with a Lyman continuum escape fraction of 10\% the two regions we have defined
within the BDF would be reionised. Assuming more realistic estimates of the
ionising photon production efficiency, both bubbles would be in the process of
merging into a large reionised bubble, such as those that through percolation
completed the reionisation of the universe by z = 6. The rather small values of
the escape fraction required to reionise the BDF are compatible with the low
fraction of faint Ly{\alpha} emitters identified in the BDF. Finally, we
confirm that the low luminosity sources represent indeed the main contributors
to the BDF ionising photon production.
