And then of course I fire prematurely before adding
https://www.legislation.gov.uk/ukpga/1964/26
where the original print PDF has
168.-(l) The holder of a justices' licence shall not allow a Children
person under fourteen to be in the bar of the licensed premises
prohibited during the permitted hours
but it's still 16 to consume with a meal
169(4) Subsections (1) and (2) of this section do not prohibit
the sale to or purchase by a person who has attained the age
of sixteen of beer, porter, cider or perry for consumption at
a meal in a part of the premises usually set apart for the
service of meals which is not a bar