I refer to your article, The parking zone rebels (Oxford Mail, April 17).

It is interesting to note that members of the Liberal Democrats on the county council have distanced themselves from their previous stance on proposed charges for residents' parking.

When they shared power in the previous county council executive, they were in favour of charging, but it would appear they have made a U-turn now that they are in opposition.

One might venture to suggest that the reason could be that there are city council elections due in the near future.

Could this be seen as a prime example of political opportunism?

It is also interesting to witness the machinations of the Green Party members in trying to justify their objections to the proposals which appear to be entirely in line with their principles.

David Robertson, Cabinet member for transport, Oxfordshire County Council