Second homes and the census

I have never been convinced that 'second homes' a major issue in the UK (although they might be important for a small number of rural areas). The Census figures would appear to confirm this - 165,095 people (approximately 0.3% of the population) report a second address that they use for more than 30 days of the year. Many more people report second addresses (1.57m) but the vast majority of these are students living away from home.