There are 18 species of bat native to the UK, of which the commonest and smallest is the common pipistrelle and the largest is the noctule. The pipistrelle has a body length of 35 mm and weighs about as much as a 20p coin; and even the noctule, with a body length of 75 mm, is small enough to fit into the palm of your hand. For more information on British bats, click here.
There are actually two species of pipistrelle that are native to the UK. Nathusius's pipistrelle, to quote bats.co.uk, is "A previous migrant species, [which] has only been classed as a resident species since 1997."
© Haydn Thompson 2017