Swallow-Tailed Moth (Ourapteryx sambucaria)

Swallow-Tailed Moth (Ourapteryx sambucaria)

Observation - Swallow-Tailed Moth (Ourapteryx sambucaria) - UK and Ireland. Description: Can someone identify this moth that was spotted on the bathroom wall at 23.00 on 31 July 2011. Location Hampton Hill, Middlesex.

Can someone identify this moth that was spotted on the bathroom wall at 23.00 on 31 July 2011.
Location Hampton Hill, Middlesex.