You can do the survey bit.
You can't collect the information unless you register with the Data Protection Registrar. It's all to do with the proposed use of private data.
How about placing an advert on the back of every envelope you send. Christmas is coming and the amount of mail seems to increase exponentially. I'm sure that if you ask the Group Administrators nicely they would give permission for you to print the logo and the web-site details. I know that the group produce stickers but they might struggle with demand if all 65,000+ registered users placed an order.
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