I generally use UPS. However they will not take bikes, I use parcelforce for bikes booked through senditnow.com.
I like UPS booked through interparcel. Not the cheapest, but I can book in a 4 hour window (0900/1300), they always arrive in that window and they always have proper Vans designed to take a lot of parcels - rather than a transit or sprinter where everything just gets chucked on top of everything else.