SAIC, the larger and more profitable of the two companies, has made it clear that the impetus for co-operation came from the Chinese government,.
Both carmakers are state owned and the government is known to be seeking consolidation in China's automotive industry.
The two parties have agreed to an initial exploration of a co-operation, said Wang Hong Biao, chairman of NAC UK.
The parties have signed a letter of intent and will now seek to explore all future opportunities and strategies. Any future plans will only serve to strengthen the position of each company and its workforce.