Now, what is the case is that there's been a crackdown, due to pressure from law enforcement agencies, on incorrect details being set on domains. However, this actually has no effect on what's published in WHOIS because the only actual requirement is that the registrar have the correct details for the domain on record and escrowed. So long as the registrar has correct details, the registrar can mask the detail in WHOIS however is applicable, so long as it's clear that WHOIS privacy is in place.
In the UK whois privacy is only for non-trading individuals (i.e. for personal Web sites) and always has been I think.
Then again, it's totally up to ccTLD operators to decide on what details are published in WHOIS. gTLDs (those longer then two letters long) have to stick to ICANN's policies.