Note to anyone curious: the gTLD does not mean this is related to OVH, the domain is open to all OVH customers. https://www.ovh.co.uk/domains/dotovh.xml I didn't know, I looked it up, maybe it's interesting to others as well.
Yes, you can get a free one if you sign up to any OVH service, which includes their cheapest webmail. I needed an email on OVH for spam testing purposes and for peanuts I have one on my own .ovh domain which is kinda neat.