Perhaps the most famous girls' comic of all time and highly collectible. Early issues do show up on eBay UK (and sell very well) but not the first issue very often, especially in high grade. That white cover shows every minor defect!
The free gift in issue #1 of a Ladybird Ring is rare and would add £50-£75 to the value quite easily. A run of issues #1-10 reached £113 on eBay UK in Sep 2008.
Note: some PR issues may have no value. Selected issues in FN, VF or VF/NM may not exist in some titles.