I've had this issue as well. For UK domains there is an opt-out option. You don't have this for a dotcom so I've used the address of my hosting company as the address for the technical contact along with my email address.
This way, I retain control of the domain without exposing private data. This is the whois for gdwnet.com - my domain:
Registrant:
Private Individual
3-3a Gloucester Street
Bath, Avon
GB
Domain name: GDWNET.COM
Administrative Contact:
Williams, Gary
[email protected]
3-3a Gloucester Street
Bath, Avon
GB
+44.8707872835
Technical Contact:
Hostmaster, Gradwell dot com
[email protected]
3-3a Gloucester Street
Bath, Avon BA1 2SE
GB
+44.8707872835