There is a large advert for Tom Dark in the new Yearbook. I have tried emailing him by typing the email address in that advert but my wonderful provider keeps asking me to enter a valid recipient.
I have copied and pasted the same address from a Forum post from 2020 with the same result.
There is also a web site shown in the advert but this, despite being typed in as shown reveals, among others, "TD-Engineering" who are steel fabricators.
Dave, the last email I had from him did originate from the email address as set out in his advert so I can only suggest trying a different email account (assuming you have access to more than one provider.)
That said it is always a sporting exercise getting hold of Tom!
P.S Yes, as the one in the thread Simon just posted the link to above.