Hi Mariella
Tiger uses data pushed from the CIS (LICC) at stations. Providing the CIS is connected to Darwin and pushing platform information, the platform number should appear on both the screens at the station *and* in Darwin within a short period of time - usually a second or two. Where a CIS isn't connected to Darwin (which should be the exception), the platform will show on the Tiger feed before it shows up on Darwin.
Peter Hicks
Director
OpenTrainTimes Ltd.
OpenTrainTimes Ltd. registered in England and Wales, company no. 09504022.
Registered office: Suite 1-3, Hop Exchange, 24 Southwark Street, London SE1 1TY