The data displays the % of households in the UK that own a landline telephone. In 1970, when this survey initiated, 35% of households owned a telephone. As of 2017, that number had increased significantly to 89% of households. The market penetration was at it's highest in the years 1998-2000 when it reach 95%. It's important to note that this statistic refers only to land line phones. It does not include mobile phones.
Although fixed-line telephony has been losing customers since around 1998, its remaining customers seem to be pretty satisfied with the overall service.
