Just that really, you can take your DCs (or yourself if you're interested) to any comic book shop in the UK today and they will let you choose 3 free comics per person from a wide selection, you don't have to buy anything.
I realise this might seem like an ad, I don't work in a comic book shop. DH went to our local one this morning with DS and commented there were hardly any children there and so many child friendly comics available. It's a rainy Saturday where we are, so thought it might be a good suggestion for some of you.