Chiff Chaff ??

Following on from my journal of last Sunday 20th July, I was honoured to have two of these little birds at the bird bath today. I've been poring over my RSPB Complete Birds of Britain and Europe and am ever more convinced that they are Chiff Chaffs. They are little bullies and try to scare the Blue Tits and Great Tits off both the feeders and bird baths, although these birds don't use the feeders at all. In the book it says they eat insects and spiders from foliage.
Another extremely hot day today, I did some tidying up in the garden but I didn't stay out for too long though.