For your piece of mind I am a fully DBS (CRB) checked professional photographer
based in Hertfordshire.
For working with children I have always had a CRB check certificate, additionally taking it the further 'enhanced' level. Due to new regulations and the CRB check being superseded by the new DBS (Disclosure and Barring Service Check) I have now obtained one of those certificates too.
Even at a wedding or a Christening, due to the amount of children usually present I would recommend using a CRB / DBS checked photographer.
I'm also fully insured and adhere to all health and safety regulations.