LHR T5 - T3 Xfer
I am flying into LHR T5 on BA and departing T3 on TG on separate tickets next week so I’m assuming I won’t be able to check right through. Again assuming not, how do I transit landside and how long does this typically take? I have 3 hours between ETA and ETD. (I tried looking at the BAA website but it is being totally uncooperative on the transfer between terminals link from here).
Thanks.