The new agreement will provide discounted air travel for 300,000 central government officials from 18 departments, to more than 50 destinations from the UK.

Norwegian is one of the few non-UK airlines to become part of the government’s Crown Air Programme – for the next two years – and it believes potential revenue from the deal will be in excess of £1 million.

Norwegian is growing rapidly in the UK having launched more than 10 routes from the UK in the past year and is expanding its low-cost flights to the USA by more than 50% this summer.

Norwegian said the discounted fares will “keep the cost of booking international business travel as low as possible for central government officials, saving money for the UK taxpayer”.

Dominic Tucker, UK head of sales at Norwegian, said: “This new agreement will help the Crown Air Programme save costs on their budget while receiving high quality travel with Norwegian.

“We look forward to taking off this new relationship as we continue our significant UK growth.”