I'm arriving at LHR on a Sat from LAX.
I have access to the lounges and usually hang out at A gates to wait for the LHR to GLA flight.
This time I have an 8hr layover but I was thinking of heading over to B gates. The only time I have ever used B gate lounge is when I am flying LHR to LAX and usually the flight leaves from B gates.

Anyway, this is a long way to say can I access B gate lounges on a LHR to GLA ticket?

Thanks!