Just been reliving all those OATS days and remembered something even scarier than the kidders circuit - the Westcott NDB.
It was regularly used by 5 or 6 a/c all practising holds or procedures and is the only place my instructor ever took control to avoid other a/c (3 times on separate occasions). The best bit was that Cabair chaps used to go there too and be under FIS from EGTC whilst we were on Oxfords App.
Now that place is an accident waiting to happen - no control, no co-operation and no room. Must look interesting on Lutons screens.