Read on the BBC news web site,
Periodically, airports amend the Runway designators to reflect changes in Magnetic North. In the case of London City this will be from the current 10 and 28 to 09 and 27.
They are required by the CAA to make the change this year - it will take place on 02 July.
There is a great deal of work to be undertaken before the change, but there should be minimal disruption to the business.
They had the opportunity for a trial run last year, you can see from the attached we used the fun day closure for the practice, so it should be straight forward this time.