Not using the last segment of a return journey

[matrignano]

Let's say I'm flying A-B-C return, with B being a stopover city.

If on the way back I decide to exit at B and not fly the last segment (B-A), would a airline like BA penalise me in any way? Any repercussions on subsequent flights on the same airline (bearing in mind I have some status)?
Would I be able to retrieve my hold luggage, bearing in mind I would have a ~7 hour stopover at B?

[matrignano]

I'd rather not alert them of my intentions, in case what I want to do is frowned upon!

[matrignano]

I’ve never done it before so hopefully BA will be lenient. Also I’m Silver and flying club all the way so they can fk themselves if they don’t like it

I land early at LHR T5 and supposed to leave 10 hours later from T3 (the segment I want to skip).
Any tips for best time/way to make my swift exit, and to try and retrieve luggage?

[matrignano]

Thanks. I'll give it a shot.

So how do I go about it once I disembark from the plane?

Head for passport control/exit instead of the connections area?
Who/where can I ask if I can get my luggage back?

Otherwise I'll have to travel light and just carry on 2x cabin bags, so no need to check any luggage.

[matrignano]

Thanks for all the advice.
Will either try to fly the return leg with carry on, or ask that the bags are delivered at check out at LHR.

I'm spending Christmas with family (location A), then going on holidays to location C. My only flight option is with a stopover at location B, London, which is where I live.
Hence why it would be convenient for me to exit at B...