G L Samson (Oxford Mail, March 26) accuses the Boundary Commission of gerrymandering over boundary changes to the Oxford West and Abingdon parliamentary constituency.

But this is not so.

Gerrymandering can only occur when politicians become involved.

A current example is David Cameron’s plan to reduce the number of MPs – which is intended to benefit the Tories by eliminating Labour seats disproportionately.

The Boundary Commission, however, is politically neutral.

While its decisions may disadvantage a political party in one place, they are likely to benefit the same party in another.

The same review that transferred parts of the Wantage and Witney constituencies into Oxford West and Abingdon also transferred part of Oxford West and Abingdon into Oxford East – a change that undoubtedly benefits the Liberal Democrats.

Mr Samson says nothing about this.

Does he regard this change also as gerrymandering? Or does he object to boundary changes only when they disadvantage the Liberal Democrats?

Chris Robins, Kidlington parish councillor, Foxdown Close, Kidlington