Technically the GBP has been going south against the CHF for some time now and has recently broken through a fairly strong 1.4600 - 1.4630. It retested that region a few times (8th, 11th and 13th of January) with an other strong break lower on the 15th.
Given the of the pair, I expected a move back to 1.45 (supported by a possible consolidation of the pound after its strong move down this week). If this corrective move stays below 1.46, which is strong resistance now, further downside upside is not expected. I remain cautious till the PA confirmes that 1.45 holds if the price gets their next week.