Possible tortoiseshell limpet shell

Possible tortoiseshell limpet shell

Observation - Possible tortoiseshell limpet shell - UK and Ireland. Description: I think this looks like a tortoiseshell limpet but it shouldn't be found on the South coast, however it is only the shell so could have travelled. What does anyone else think?

I think this looks like a tortoiseshell limpet but it shouldn't be found on the South coast, however it is only the shell so could have travelled. What does anyone else think?