Anyone know why TUI have been operating some of their LGW-bound flights into STN? It doesn't seem to be for storage reasons (yet) as they are being used the following day. Two 757s went into STN on Tuesday night, one flew empty from STN to collect pax and returned to LGW but the other positioned STN-MAN on Wednesday morning before operating a rescue flight from there. Tonight's AGA-LGW and SID-LGW are both routing to STN according to FR24.