I have a flight coming up with QR in the next couple of weeks, departing LHR at 21.55. It would be easier for me to go to LHR first thing in the morning, check my luggage and then head into my office in London for the day with just my hand luggage. It seems from this thread that it can be a bit hit and miss as to whether the check-in staff with accept luggage early. Is there any leeway based on the class of travel/FF status? I am OW Emerald, flying in J. In T5 BA is more flexible about early check-in for J pax, but not sure if there is maybe just a bigger problem with the luggage system in T4 that might prevent this? If there is a risk I will be turned away I probably won't bother trying for an early check-in.