So here it is, the biggest day at Paddington since the end of the Westerns, or maybe the class 50's or the arrival of a class 87 ?   The last day of HST operated services on the GWML is Saturday May 18th 2019. 4 Diagrams operating, Ive summarized all movements here.   Sorted by time to/from Paddington (Inverted Colour indicates an Exit from Paddington. Pictures below, Ive attached the Spreadsheet here incase anyone wants to work with it, includes links to Realtimetr