Is there anything better than walking through London on a sunny day? Not a scorcher, just one of those quietly golden afternoons we've been graced with lately. Even my scruffy corner of Shepherd’s Bush takes on a sort of accidental glamour in the right light. So, when I set off across town, I already had that familiar London lurch of joy in my chest. I was heading to Walthamstow, spring in my step, with only the faintest idea of what I’d find. A few days earlier, Helen had messaged me on...