I have noticed on several occasions, including today, that the 1627 Kings Cross-Bradford service is reported on RTT in advance of departure as leaving from platform 7R when actually it is platform 5 (and is corrected as such after departure). This is no criticism of RTT. I recognise that what they report only reflects the source data they are pulling from, but I am puzzled how the same error has ocurred on several occasions. Can anyone explain why this might occur?