Breaking glass

We've just had a minor disaster here. We have this nice standard lamp the top of which is shaped like the branches of a tree being blown in the wind with crazed glass globes hanging from them. Tonight I was trying to get rid of some cobwebs when P said he'd help as he could reach further. He got a bit carried away and started dragging the Dyson up the stairs when ...crash!!! The cable had caught round the lamp and it fell over smashing two of the globes. Wonder if there's any chance of getting replacements???