As part of the subpoena that Jagex were issued they could have the following of you:
Name
Current address
Telephone numbers
Email addresses
Your MAC address
They can also contact your ISP if they have not gathered enough information to collect information such as the information above.
It's worth noting that Jagex were told they may only use this information for protecting their rights under the D.M.C.A - Threatening to sue you because they have your information is a breach of that.
I can't wait for Jagex to start trying to sue the people who have made a mint from botting, and then failing when the case is turned around on them causing them to have to pay for damages and breaking the data protection act. Wait for the JaGeX fail guys, it's coming!