The national champion, BLMC (British Leyland from 1968), was handicapped in its attempts to modernise by internal rivalries. Unattractive new products (particularly the Austin Allegro and Morris Marina) which were widely criticised by the motoring press, retention of legacy marques and models, labour disputes, quality issues, supplier problems and inefficient use of new equipment thwarted the dream of efficient high volume production. Increased overseas competition, arising from lowered tariffs and membership of the European Union, and high unit costs, led to low profits, which in turn jeopardised investment plans. Although the cars continued to sell well in Britain, they were less popular on overseas markets. As well as that, the company often produced several cars to compete in the same market sector. For instance, it produced four competitors for the Ford Cortina at the same time - the Morris Marina, Austin Maxi, Triumph Dolomite and the Princess.