As it states on the
Subject Access Request Page:
"Post your request letter together with a cheque for £10 by recorded delivery".You need to pay £10, which is the maximum amount stipulated in the DPA 1998, and the builder then has 40 days to comply. Failure to comply with your request is a clear breach of the Data Protection Act 1998.
So you need to pay £10 which is why it is included in the Template letter.
The template letter is in the correct format and you are entitled to EVERYTHING that Redrow have regarding you and your particular plot.
This must include all internal e mails between Redrow members of staff and Redrow sub contractors.
The template letter is, in my opinion quite clear.
I can only assume that Redrow are stalling and trying to get you to do a list of a few documents in the hope that the more revealing information, you are unaware of is not disclosed. Either that, or as you state the person who replied is not the data controller for Redrow.
All you can do is send the template letter again perhaps adding:
"Please find enclosed cheque for £10. To avoid further confusion regarding the information I require, my 'Subject Access Request' is for Redrow to provide is a copy of every document Redrow have regarding both myself and my plot. I would point out that deliberately withholding any documents would be an offence under the Data Protection Act 1998"