Before David Cameron judges the proposals for retail from his Quality of Life group, he should accept that our modern, highly competitive, retail environment benefits customers who will not thank him for adopting market-stifling measures ('Tory group in call for single nutrition label', The Grocer, 15 September, p8).

Too many of these proposals are anti-competitive and based on the same tired old anti-supermarket prejudices. Supermarkets are not forced on unwilling neighbourhoods. They only ever open where they believe there is customer demand. Without it, they would not survive in that location. Local people are able to voice objections directly and local authorities exercise extensive planning powers on their behalf.

Where town centre retailers are struggling, it is mainly due to rising rents, service charges, rates, energy costs and wage bills. Imposing planning restrictions on competitors will not reduce any of these costs.

Retailers do not routinely sell below cost. No business could survive if it systematically failed to cover its costs. Promotions occasionally involve short-term below-cost selling but benefit suppliers by increasing their sales volumes and profits.

We have a highly efficient food chain through which supermarkets support UK agriculture and deliver good value, high-quality food to customers. A Conservative Party playing to fashionable pressure group pleadings by meddling in the market would only leave customers worse off.