Sold Secure’s 2019 catalogue of Approved products can be viewed here
https://www.soldsecure.com/wp-conte...ecure-Approved-Product-Catalogue-2019-Web.pdf
and it will be seen that, although the catalogue includes several Maypole products, it does not include caravan corner-steady locks marketed by Maypole or anyone else. Presumably no manufacturer/distributor of a corner-steady lock has chosen to offer their lock for Sold Secure testing (or every lock tested has failed to be approved

) but, in any case, it’s not easy to see what testing criteria would be used to confirm how ‘secure’ this type of product might be.
I notice that corner steady locks were discussed on this forum in 2009
https://forums.practicalcaravan.com/threads/corner-steady-locks.29898/
when similar comments to EH52ARH’s were made about the locks being defeatable using brute-force methods.