The letters from TCT's legal team (or an individual, it matters not) are an interesting point. I have a little bit of experience where a club ended up going down the legal route however it involved a charity so there were legal frameworks. It appears to me that in this scenario, there is no real difference to an allotment society removing an award for growing the largest carrot following the discovery that artificial methods had been used. I suspect that the recipients of the letters are slightly rattled however in my personal view, they should feel safe in advising the authors to take a hike. If the LAA, or indeed the membership, decide to respond by phone in writing then there would be a cost involved for the legal team to read and reply to every communication. That cost would be picked up by their client.