Aer Lingus A320 EI-DES operating EI715 London Heathrow – Cork diverted to Shannon this afternoon due to weather at Cork. The aircraft positioned Shannon – London Heathrow as EI992 in the evening in order to operate EI725 London Heathrow – Cork. As a result the EI722/EI723 Cork – London Heathrow and EI724 Cork – London Heathrow were cancelled.