London Correspondent A British parliamentary committee has called for the UK government to produce robust contingency plans to cope with disruption caused leaving the EU single market and customs union on 1 January. The cross-party Committee on the Future Relationship with the European Union warns of a potentially challenging start to 2021 as businesses, traders and citizens adjust to life outside the single market and customs union. It is concerned that there will be traffic disruption around ports, trucks will not have the right paperwork, and the UK's national security could be weakened by the loss of access to EU crimefighting databases.