Top quark pair properties - spin correlations, charge asymmetry and complex final states

Results are presented on the observation of non-vanishing spin correlations in \ttbar\ pairs at ATLAS~\cite{Aad:2008zzm}, the measurement of their intrinsic polarisation and charge asymmetry. Comparisons are made between previous results from The Tevatron and current results from the LHC experiments. A new result is presented on the cross section of \ttbar\ + HF with a view to investigating this process as an irreducible background to $t\bar{t}$H production. All results presented are consistent with the SM expectations.