Adamantium is the fictional material that makes Wolverine's claws and augmented skeleton so tough. I picked the name because my first name is Adam and I like Wolverine and I feel that I have toughed it out through a lot of difficult situations and always been apart, lie the character.
Many companies in the UK are allowing people to work from home. My company is part of a global network with a large firm in the UK that has the same policies.
I also have problems with the phone--in fact, I don't even like to order food or tickets on the phone. But I can usually make myself do it, even though it very uncomfortable and there are times when I just can't do it. Therapists think of it as a kind of social anxiety, but I think it has more to do with not being able to bring the focus and other cognitive resources to bear that I need to have conversations, even trivial conversations, with people on the phone. Either I pay full, effortful attention, or I lose track completely.
For work, I have to adopt a professional persona, so it's more like acting and this is somehow easier. I have to ask--what does the role demand at this point? Then do that. If the situation goes out of that scope, I can defer to my managers/leadership.
Trying to be an employee was one of the scariest things I have ever done, but twenty employed years later it has been worth it.