> I've seen them withhold these from the patients intentionally and have had to ask for the forms
That would be illegal if it was happening wrt the patient experience survey.
The link that you provided tells us so.
> Once statistics have been designated as National Statistics it is a statutory requirement that the Code of Practice shall continue to be observed.
Luckily, staff on hospital wards have nothing to do with collecting anything connected to the patient experience survey. Again, what you saw was not part of the patient experience survey.
(http://www.nhssurveys.org/faq)
> I've seen them withhold these from the patients intentionally and have had to ask for the forms
That would be illegal if it was happening wrt the patient experience survey.
The link that you provided tells us so.
> Once statistics have been designated as National Statistics it is a statutory requirement that the Code of Practice shall continue to be observed.
Luckily, staff on hospital wards have nothing to do with collecting anything connected to the patient experience survey. Again, what you saw was not part of the patient experience survey.