The Prisoner S01E07 - Many Happy Returns

Number Six awakes to a deserted Village. He realises that he has the perfect opportunity to escape his captors. He builds a raft and sets sail away from The Village. During his voyage he comes across some gunrunners who steal his remaining supplies and leave him to drown. He is eventually washed up on the south coast of England. He manages to get back to London to find a "Mrs Butterworth" living in his house. The next day is Number Six's birthday and Mrs Butterworth has a surprise planned for him.