Well, I assumed it would be about breastfeeding or duration of breastfeeding, but it's not at all and sadly only mentions BF until 6 months, although it does say at least 6 months, but then goes on to talk about all the situations where you may want to formula or combi feed. Not one whiff of the WHO 2 year guideline.
I am the only one who thinks they could have done a much better job? 
http://www.nhs.uk/Conditions/pregnancy-and-baby/Pages/solid-foods-weaning.aspx#close