Cable hits 1.2784, lowest level since Aug 13, after slide from 1.2830

1.2830 was rally high from 1.2793 Ldn am low (1.2835 was last week's low)

King dollar reigns, courtesy of 'Trump trades' (Trump inauguration Jan 20)

GBP/USD support points include 1.2763 (Aug 13 low), 1.2750 and 1.2700

UK Q3 GDP data due Friday (morning after Mansion House speeches); 0.2% f/c