It is possible for someone who has been in one House to then serve in the other, but not to serve in both simultaneously. Perhaps it is a case of trying to cover all the bases, but the fact that the name, or rather names, is followed by ‘Member of the Lords, House of Lords’ is rather a giveaway as to which House in which I sit.
The names I have shown in previous posts have usually been on letters received from charities. This letter is from a professional body. Hmmm.