I haven't seen his most recent talk but I've met him a few times and heard him speak a lot and he said he sends breeders down to... Tim Collyer(?) I want to say, somewhere down south, maybe Shropshire or Hertfordshire or something. It was pre-Covid and pre my own memory being blitzed by ECT or I'd ordinarily remember. I don't think he and Northumberland Honey who are a couple from Barnsley based in my hometown coincidentally, have any kind of relationship and they'd be the obvious people in Northumberland if he was partnering with anyone but they're a lot more Buckfast based whilst Willie is in his late 70's and not into AI etc as far as I'm aware and from his two books. He doesn't sell bees nor buy them in for a great number of years so I think he's a bit more laissez-faire and let's nature take it's course to a greater extent, whilst as I say, sending some genetic material down to some gentleman who does the modern fiddly stuff. If he did work with another Northumbrian beekeeper then it'd likely be Ian Jobson or similar - an amateur master beekeeper based in Morpeth - still a good distance from Berwick where Willie is. I'm in the same, county but from mine to Willie's takes well over an hour, sometimes nearer two. He's a grand fella Willie, a real encyclopaedia of bee and country lore - keeps almost exclusively Smith hives as he can make them from 6 pieces of wood himself and has managed through his own canniness to create a machine that crushes the OSR crystals into so minute a size that it creates lovely creamed honey. I've watched him inspect many hives and he's a great hanlder of bees, does it bare-handed which obviously is a nuanced issue re disease transference but I guess if he's just treating each apiary as a single unit which I can largely understand, then it's alright. I know everyone's aware of drone drift but from my own tiny project a few years ago of marking drones, they disseminate themselves into EVERY hive to a surprising extent, even when I was expecting a not dissimilar trend - eg I cull drone brood in my poorer and average colonies but found that emerging drones marked from my good colonies were found in equal number in my poorer colonies once mature - nature likes its balance it seems