Thanks TBS. I feel more reassured now, as I was considering switching my flights for a shorter connection, but I'd much rather go home and come back with the luggage.

On a separate note, could I even check in my bags at Heathrow to Dubai, prior to even taking my (separate) outbound to Dublin? This would also mean it's prior to taking the first leg of my DUB-LHR-DXB ticket, which I'm assuming is a no? It'll be the same day.

Sorry one more thing, would I be able to use the First wing and access the Concorde room for a same-day First ticket ahead of my LHR-DUB leg? That's in CE with no status. I know I can use it in the evening ahead of my F flight, but can I use it any time that day?