Department store keep Gary Oldman's line out when broadcast (7,3,5)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

Fort(=keep) + Numan(=Gary) + O[l]dman’s*. Gary seems a little weak as a def for Gary Numan, although Gary Numan and Gary Oldman are regularly paired together in a joke about Oldman being younger than Numan.