Signatures on a consent order

[nopumpkin]

Five applicants for a tribunal and one of the two respondents have agreed via email to settle out of court. The other respondent is unresponsive but is a close relative of the agreeable respondent, who appears to speak on their behalf. The consent agreement can be executed in counterparts. The agreeable respondent has returned a pdf copy signed by them both, but it is undated and there is no concrete evidence that the second signature is genuine. Would it be risky to assume it is enforceable?

Are we having to guess what kind of tribunal this is, and whether the respondents are in business together and if so in what capacity?

It's a housing tribunal for a rent repayment order. The five applicants are the tenants. The two respondents are the landlords.