I have the following string of flights coming up:
HEL-LHR AY831 0800-0910 SAT14AUG
LHR-DXB BA107 1250-2250 SAT14AUG
DXB-LHR BA106 0145-0620 SUN15AUG
LHR-HKG QF030 1220-0710+1 SUN15AUG
HKG-NRT CX504 0910-1435 MON16AUG
[ticket change]
NRT-SIN JL711 1755-0010+1 MON16AUG
SIN-PER QF072 0905-1410 TUE17AUG
PER-MEL QF776 1820-2345 TUE17AUG

How many of the flights will they be able to check me in for? I’ll have 1 bag with me.
I have a terminal change in LHR (T3-T5, then back again), I was thinking that I could put my bag in storage at T3 for the day and collecting it when I get back to T3 22 hours later.