I just found this site http://senditnow.com/ from a google, looking for a courier for something. Decent enough site. Turns out when I get to the end its actually Royal Mail / Parcel Force directly. Cool. Good prices and no middle man.
Similarly, did you know www.cameras2u.com is acutally Jessops in disguise? They'll not let on, only a yell.com search throughs them up as the same address. Amazing difference in prices between high street, jessops.com and cameras2u.com They are more than happy to take your money mind with the high street option!