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Bright, high redshift ($z>6$) QSOs are powerful probes of the ionisationstate of the intervening intergalactic medium (IGM). The detection ofLy$\alpha$ damping wing absorption imprinted in the spectrum of high-z QSOs canprovide strong constraints on the epoch of reionisation (EoR). In this work, weperform an independent Ly$\alpha$ damping wing analysis of two known $z>7$QSOs; DESJ0252-0503 at $z=7.00$ (Wang et al.) and J1007+2115 at $z=7.51$ (Yanget al.). For this, we utilise our existing Bayesian framework whichsimultaneously accounts for uncertainties in: (i) the intrinsic Ly$\alpha$emission profile (reconstructed from a covariance matrix of measured emissionlines; extended in this work to include NV) and (ii) the distribution ofionised (H\,{\scriptsize II}) regions within the IGM using a $1.6^3$ Gpc$^3$reionisation simulation. This approach is complementary to that used in theaforementioned works as it focuses solely redward of Ly$\alpha$ ($1218 <\lambda < 1230$\AA) making it more robust to modelling uncertainties while alsousing a different methodology for (i) and (ii). We find, for a fiducial EoRmorphology, $\bar{x}_{\rm HI} = 0.64\substack{+0.19 \\ -0.23}$ (68 per cent) at$z=7$ and $\bar{x}_{\rm HI} = 0.27\substack{+0.21 \\ -0.17}$ at $z=7.51$consistent within $1\sigma$ to the previous works above, though both areslightly lower in amplitude. Following the inclusion of NV into ourreconstruction pipeline, we perform a reanalysis of ULASJ1120+0641 at $z=7.09$(Mortlock et al.) and ULASJ1342+0928 at $z=7.54$ (Ba\~nados et al.) finding$\bar{x}_{\rm HI} = 0.44\substack{+0.23 \\ -0.24}$ at $z=7.09$ and$\bar{x}_{\rm HI} = 0.31\substack{+0.18 \\ -0.19}$ at $z=7.54$. Finally, wecombine the QSO damping wing constraints for all four $z\gtrsim7$ QSOs toobtain a single, unified constraint of $\bar{x}_{\rm HI} = 0.49\substack{+0.11\\ -0.11}$ at $z=7.29$.

IGM damping wing constraints on reionisation from covariance reconstruction of two $z\gtrsim7$ QSOs