I checked in recently with EI and got two boarding passes for my onward flight (LHR-BOM I think). Shoved them into my bag, used F check in at LHR and straight into GF where I sat down for an hour or so. Checked my boarding time on the pass and then noticed I was now sitting in 2A, not 10A. High tailed it over to the CCR! Indeed a nice surprise I had in my pocket without knowing for a few hours.