We are hoping to take advantage of the BA T5 Overnight Bag Drop on Wednesday and not sure of the best way to get to the terminal fully laden with bags.

I know at BHX there is a reduced fee in the drop off car park for those using the overnight bag drop. Does anything similar exist at T5? If not, where is the best place to park while dropping off bags? When I try searching for 1hr parking on the Heathrow website it gives me no options. To book in the Short Stay Fast Track Parking Terminal 5 requires a minimum 9hr stay (for £90)

Can I just turn up and get a ticket at the barrier?

Thanks all