BA CityFlyer Embraer 190 G-LCYV, which overnighted at London Stansted after arriving as BA2234 from Myknonos yesterday evening, positioned London Stansted – London City as BA9750 early this afternoon in order to operate BA2221 London City – Mykonos. However the return BA2220 diverted to London Southend having missed curfew at London City.