I solved this a while ago just never got round to posting.
here is the code i am using which is working:
<span class="buttonAction"><?php
echo Quantity . ": " . tep_draw_input_field('cart_quantity');
echo "<br><br>";
echo tep_draw_hidden_field('products_id', $product_info['products_id']) . tep_draw_button(IMAGE_BUTTON_IN_CART, 'cart', null, 'primary'); ?></span>
Hope this helps