Small folded metal adapter plate design

I need a small adapter plate designed to fit in a UK electrical outlet
Simple design with 2 folds and a cut out in the centre

Here's a quick hand-drawn drawing showing dimensions
https://www.dropbox.com/s/zvhvf8d7rsyc2gv/Screenshot%202023-12-02%20at%2009.05.14.png?dl=0

And photo of a cardboard prototype to visualise
https://www.dropbox.com/s/r5msg8t18q6b3mm/Screenshot%202023-12-02%20at%2009.06.00.png?dl=0


I need this drawing up properly so I can then get some prototypes fabricated