Double Bunk (1961)

When newly weds Jack and Peggy face eviction, they are tricked into buying a run down houseboat. After rebuilding the engine, they take their friends Sid and Sandra, on a local trip down the river to Folkestone, but somehow they end up in France, and with no fuel and supplies, they resort to desperate actions to get back home. (imdb)
Cast and Information
Directed By: C.M. Pennington-Richards
Written By: C.M. Pennington-Richards
Starring: Sidney James, Dennis Price, Graham Stark, Ian Carmichael, Janette Scott, Naunton Wayne, Liz Fraser
Genre: Comedy
Country: UK