Help with UK install of Shelly 1L with 2 light switches and 1 light

I have a strange light switch arrangement that i would like some help with. I have created a mock up of the wiring on the light and 2 switches. Can anyone suggest how to wire up the Shelly 1L please.

Thanks but I’m not sure any of the diagrams match my current setup.

I've been up in to the loft space and this is the complete wiring schematic

I've looked at a Facebook post from Dimitar Dimitrov on how to wire the circuit with 2 switches and i think i can get it working like this

I'd be really grateful if someone could have a look and let me know their thoughts.