BA CityFlyer Embraer 190 G-LCYM operating BA8490 Berlin Tegel – London City diverted to London Southend this morning due to weather at London City. The aircraft was able to position London Southend – Berlin Schoenefeld as BA9750 later in the morning and returned to service operating BA8492 Berlin Tegel – London City. As a result BA8491 London City – Berlin Tegel.