Just a note to say if you are having any mice/rat or other pest issues, I would like to recommend Lee at LC Pest Control (07940 353228). Really professional, responsive, knowledgeable, good value and easy to deal with. Sorted my mice issue at my house in Wandsworth and blocked it up to stop any recurrence! Feel much happier! Then the tenants in my rental flat in Clapham got them and he's sorted that too.
Not sure people realise that pretty much all of us have mice issues! Little swines!