A sleepy market was stirred by a drop in the pound, prompted by reports, initially by the FT, that the UK government is planning to unpick parts of the withdrawal agreement that was signed with the EU in January, including elements of the special arrangements for Northern Ireland that are legally binding. A government source cited by the Guardian newspaper said that the move would likely derail this week’s round of trade negotiations with Brussels, while a spokesperson downplayed the move as being a “fallback option” in the event a deal can’t be reached.