KLM and CityJet have announced a new co-operation on routes between the UK and The Netherlands which sees an increase in the scope of the codeshare agreement already in place between the two airlines and the wet leasing of CityJet aircraft to KLM subsidiary, KLM Cityhopper. From May 15 KLM Cityhopper will wet lease two RJ85 aircraft from CityJet to operate four additional Amsterdam to London City services each weekday, bringing the KLM frequency to eight per weekday, four operated by KLM Cityhopper on Embraer 190s and four by CityJet on wet lease using Avro RJ85s. CityJet will also operate a number of existing flights to Birmingham, Hamburg, Bordeaux and Belfast on behalf of KLM.KLM is currently a codeshare partner on CityJet's services from the Netherlands to London City Airport.