Usual routing from EGGW to EIDW is an Olney departure followed by radar vectors towards Trent (TNT) vor climbing to FL280. Then usually direct Wallasey (WAL) vor or occasionally radar vectors. Flights are then vectored along the nortern edge of the UB1 towards EIDW.
Late at night a direct routing from TNT to LYNAS or DUB is normal.
Going the other way its vectors towards or direct to WAL. From there its the LOREL 2F arrival routing via PEDIG and CLIPY. Descent is arranged to be FL200 twenty miles north of CLIPY. After CLIPY its radar vectors to EGGW.
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