Theresa May has insisted the UK will leave the EU customs union amid speculation the departure could be delayed for years until a replacement system is agreed.

Theresa May is facing a week of fresh parliamentary battles over Brexit as clashes centred on staying in a customs union with the EU continue to dog the British Government.

Theresa May is being warned by the head of the CBI that time is running out to make progress on Brexit and remaining in a customs union with Brussels is the best option for British business.

An opinion poll of people in Northern Ireland shows nearly 58% want the north to stay in the single market and customs union after Brexit.