Since the shortest day, the evenings continue to lighten. In the evening it is now light some 30 minutes later than it was at the shortest day. Even the mornings are starting to get a bit lighter earlier at last. The days are lengthening about 2.5 minutes a day and the rate of change speeds up as we approach the equinox. I much prefer lighter days! Already it is just about light still at 5pm.
See http://www.timeanddate.com/sun/uk/cambridge .