Looking for a poem: At the supermarket

I’m looking for a poem titled ‘At the Supermarket.” Not sure who the author is.

Baby needs it for a school project; she’s taking part a poetry recitation competition [Eisteadford] and part of the learning is for her to learn to research techniques by finding a copy of the poem herself.

She has already done regular searches on Google, Yahoo and DMoz, but the poem didn't come up.

That's when I came in, and when I couldn't find it, I emailed a couple of people involved in literature to ask them. Just to cover my bases, I'm also posting my request on my blogs. I’d be very grateful if you forwarded info about the poem if you know of it.

I’ve also asked Baby to ask her teacher for more detailed information regarding the poem, to help refine her search.

17 July update: Finally found the poem. It's AT THE SUPERMARKET, by H. ORAM, and published by METHWEN CHILDRENS BOOKS. Not sure what year.

I wish they wouldn't do it
(Is what she says first)
Drumming her fingers on the packet of
Healthy Life Cereal
As we stand in the queue
Waiting to go through

It's putting temptation right in our path
(Is what she says second)
As the lady at the till can't find the price
of green bananas
And we're stuck in the queue
Waiting to go through

I've a good mind to speak to the manager
(Is what she says third)
As Em lies on the floor kicking and crying
Me want Me Want
To the tut tuts of the queue
Waiting to go through

Oh all right then, just today
(Is what she says last)
And as we help ourselves to the Chews-Me Bars
I can't help thinking what a very good thing
They put the sweets by the queue
Where sooner or later Mum'll give in