Upper limits on the  [m<sub>H<sup>&</sup>plusmn;</sub> , tan&beta; ] plane from direct searches for charged Higgs bosons in type-I 2HDM with cos(&beta;-&alpha;)=0. Observed (lines with points) and expected (lines) limits are quoted at 95% CL. The regions below these lines are excluded. All charged Higgs bosons are from top-quark decays (t&rarr; H<sup>&plusmn;</sup> b) in tt&#772; production events. The tt&#772; production cross section uses TOP++ 2.0 [41] calculated at the NNLO in QCD including NNLL soft gluon terms [42,43,44,45]. The branching ratios of the top quark and charged Higgs bosons have been calculated using 2HDMC [37]. The red shaded area is excluded from flavour physics constraints from Ref. [46].