Safestore has delivered a 7.1% increase in operating revenue to £57.4m and a 12% increase in pretax profits to £55m in its half-year results to April 2017.
It said portfolio value had increased by 4.5% since 31 October 2016. Values rose by £27.6m in the UK to £980.3m and by €16.9m in France to €287.8m (£253m).
Chief executive Frederic Vecchioli said: “Safestore has performed well in the first half of the year and continues to build on the strong earnings and dividend growth achieved over the past four years.