Steve,
thanks again for your help with this one, https://piklist.com/support/topic/adding-a-repeatable-div/. I played around with that, made some changes and now attempted it again.
So here is what I have this http://antonioborrillo.co.uk/andys/index.php/home/new-test-page-2/. And here is the code
New page: http://antonioborrillo.co.uk/andys/index.php/home/new-test-page-2/
my-field.php:

<?php
/*
Title: My Metabox
Description: My cool new metabox
Post Type: page

*/
 
// Let's create a text box field
piklist('field', array(
	'type' => 'select'
	,'field' => 'my_divs'
	,'label' => __('Select a Div')
	,'add_more' => true
	,'choices' => array(
		'div_one' => 'Div One'		
	)
));
// Let's create a text box field
/*piklist('field', array(
  'type' => 'textarea'
  ,'field' => 'my_divs'
  ,'label' => __('Add your code')
  ,'add_more' => true
)
*/
 ?>

My template file, test_templ.php

 <?php /* Template Name: New Test page*/ ?>

<?php get_header(); ?>

<?php 

	$my_divs = get_post_meta($post->ID, 'my_divs'); // Get the field data

	foreach ($my_divs as $my_div => $name) // loop through each add_more
	{
		get_template_part('custom-div', $name); // display the template
	}

?>

<?php get_footer(); ?>

and finally the custom-div-div_one.php

<div class="infoBox one">
	<h2></h2>
	<p></p>
</div>

and finally the custom-div-div_one.php

<div class="infoBox one">
	<h2></h2>
	<p></p>
</div>

OK, so here is a screenshot of what I have in the dashboard:
http://s30.postimg.org/gtj1d3cvl/plugin.png
SO the infoBox one div (well three of them in fact) have been successfully injected in the page, here is a screenshot to prove that).
http://s24.postimg.org/gne5t93dx/plugin_results.png
So, all good but there are a few things:
-for this new page I used a different template, is there anyway I can get the metabox with my divs to appear only when I select a specific template in the dashboard? When I add a new page in the template drop down box in the dashboard I get a choice of templates to select and among those my custom template. Can I get the metabox to appear only when my custom template is selected? does the plugin support this type of behaviour?
-the divs added have a heading and a p tag inside, same as see in custom-div-div_one.php above: is there anyway the customer can edit those and enter text in the h and p tags – at the moment they are empty and I don’t have anyway to add stuff to them