Gordon Brown's attendance in the HOC

Whilst watching him pacing to and fro on a stage like some kind of prima donna pontificating about the ‘disaster’ of a no-deal Brexit, it suddenly occurred to me that I haven’t seen him on the back benches since he left DS. This in turn prompted me to wonder if he’s been, and still is, drawing a parliamentary salary and perks? I think we should be told. After all, it’s our effing money??