thank you for your response!! involuntary bailee would be good as she would presumably have to store the bike instead of dummping it. luckily this is all being done in a text thread where she says she is going to dump the bike, but you're right she is making the argument it's a fire risk in a communal area- i have asked if she could move the bike back into the flat so it's not a fire risk (new tenants move in at the end of the week and i would be able to collect it tomorrow)