The National Trust Area Manager replied on 7th January 2013:
Dear Mr Woodward,
Thank you for your email .
You make a very valid point about the National Trust's meadow land adjacent to the Byes. This is indeed managed as natural grassland.
All the land has been declared inalienable under the National Trust Act and as such the Trust has a statutory duty under the National Trust Acts to promote the conservation of places of historic interest and natural beauty and ensure their permanent protection .
We would support the correct re-designation of this meadow.
We note your comment that this would have an impact on the amount of Parks and recreational land in Sidmouth as defined in the study.
And the Sid Vale Association has confirmed the status of meadow land in the Byes:
As I understand it ... any change of use for NT land requires an Act of Parliament before it can be allowed. When we bought the Hooke Field (now Margaret's Meadow) with money from the Landscape Fund, one of the signatories was the Director of NT SW, so that the land would have the same status as NT land.