This is 1A81 1737 Edinburgh to Aberdeen strengthened with a pair of class 170 units, 170456 and 170411.
A big Cat on the growl! 68006 comes up the 1 in 95 of Falkland Road Bank with 1Z20 1757 Leuchars to Edinburgh Golf Special.
Another additional working is formed by 158739 and 170430 with 1Z16 1752 from Dundee to Edinburgh.