London's Burning (1986) : 8x9

Warehouse fire continued. Billy is rescued and taken to hospital. George and Kelly have finally found a decent house and move again. Nick decides to keep Costas with him and not give him up to foster parents. Billy decides to go in search of real mother, much to his Nan's distress. Kevin pours his heart out to Remy about Mickey's attack on Maggie and she suggests that he returns her stolen ring quietly, so that it appears as if she had lost it. A letter bomb is sent to an animal-testing cosmetical plant, causing an explosion both in the company and in the van of the postman. Billy finally finds his Mum.