Not in London, but I'm currently struggling to get my deposit back...
Briefly: Lived with a housemate in shared house for 7 years. No issues, regarded as good tenants.
Mid-Feb, section 28 flops through the door out of the blue, we have to be out by April 25th.
Lockdown kicks in, landlord cancels the S28, and re-issues for July 8th.
I had already found somewhere, and would be out by the original date. Housemate offers half-rent, for single occupancy for the three months to July. We didn't expect it, but the agency emailed to say the landlord had agreed.
Happy days...
Cue July 8th, and the checkout. No issues. The place wasn't great, but was due a full refurb anyway (we were told this by the agency on a couple of occassions).
Get an email from agency, asking permission to release the deposit in full to the landlord, to cover the 'arrears'. Turns out this the other half of the rent they agreed to waive... Over £1100 in total.
An email exchange ensued, where I forwarded the emails from THEIR OFFICE confirming the arrangement.. apparently there is an issue.
Seems their representative may have got wires crossed, and the landlord did not actually agree.
So, the agent's problem, you would think? Nope, they're still trying to stitch me, and I am livid...
And this isn't a shady operation, it's a national, well-known agency.