Hi there,
As one who you might actually speak to on the way to/from LFRG I would expect you to come back the way you went, i.e. via GWC/MID.. SITET.. DVL
The reality is that at FL100 and below you are not really a major problem to S18 (Seaford), but more of an issue to TMA (SW).
How this fits with the automatics in BRU I'm not sure, but it is the way I would expect to route you. (DVL to ORTAC seems such a long way out of the way for EGTB, less for the westcountry)
Rgds BEX