The first Vauxhall Cavalier to be assembled at Vauxhall's Luton plant was driven off the production line by Eric Fountain, Vauxhall's manufacturing director, on 26 August 1977, after which the 1256 cc version, assembled at Luton and using engine and transmission already familiar to Viva 1300 owners, broadened the range. At that stage the 1584 cc Cavalier and the 1897 cc which had joined it were still being imported from Belgium, but in due course these, too, started to emerge from the Luton production plant. The commencement of Cavalier production in the UK also helped ensure that supply for the car met demand, and consequently its sales figures increased so it was now a constant presence in the top 10 best selling cars in Britain.