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No I don't, but I could certainly ask? What difference would that make? The no-smoking clause was a special condition added to our contract, it's not part of the standard contract. Either they learnt from their experience, or the previous tennant simply ignored it.
In the end, if I pull out due to lack of agreement on how to proceed on this, can the letting agent retain the 2-week holding deposit? Are there even legal grounds for a holding deposit? I haven't signed anything...