  We discuss how the multi-Regge factorisation of QCD amplitudes can be used in
the study of multi-jet processes at colliders. We describe how the
next-to-leading logarithmic (NLL) BFKL evolution can be combined with energy
and momentum conservation. By recalculating the quark contribution to the
next-to-leading logarithmic corrections to the BFKL kernel we can study several
properties of the NLL corrections. We demonstrate that in the standard
analysis, the NLL corrections to a single gluon emission includes contributions
from significantly more energetic quark--anti-quark configurations, something
that could contribute to the sizable NLL corrections in the standard BFKL
analysis.
