BA space available upgrades - any experience?

[aus_flyer]

BA customer service have given me a "space available upgrade" to use on a future flight.

I know that I have to ring them and provide my flight details, but I was wondering if anyone has used one of these in the past?

In particular, I'm curious as to how far in advance are they processed?

Thanks

 

[Sprucegoose]

BA customer service have given me a "space available upgrade" to use on a future flight.

I know that I have to ring them and provide my flight details, but I was wondering if anyone has used one of these in the past?

In particular, I'm curious as to how far in advance are they processed?

Thanks

how did you get this odoherty?

Spruce