WJMcP, there is no formal reminder as such as far as I am aware - but I have always tried to encourage others to do so, whenever the situation has arisen, as a topical chat is so much better than a written report/request, received weeks after the event. In the distant past I have called upon TC, when they were at West Drayton, as it was relatively near to my base (LL), and also once or twice to the (old) LLTWR - but not recently.
JD
