A Downing Street spokesperson said:
The Prime Minister spoke to Prime Minister Jacinda Ardern of New Zealand this evening.
She began by saying how appalled and shocked she had been to hear about Friday’s terrorist attack in Christchurch, and offered her condolences to all those affected.
The leaders discussed the swift and exemplary response of New Zealand’s security and health services and the numerous acts of bravery carried out by police and other first responders.
The Prime Minister said that the UK stands with New Zealand at this time and would provide whatever assistance is needed. Prime Minister Ardern expressed her gratitude for the support the UK has shown.