The latest poll from the King's Fund shows how both young and old continue to support the principles of the NHS: that healthcare, funded through taxation, is available to all on the basis of need, rather than the ability to pay. On 24 April the Lords will debate competition regulations made under section 75 of the Health and Social Care Act, which, if implemented, establishes a default position of local commissioning groups having to put services out to tender. It would put profit before patients, quick fixes before quality care and seriously undermine the NHS, leaving many people to suffer under a postcode lottery. Yet experience has shown that the market has already damaged the culture of the NHS. From 1948 onwards the public have helped create, fund and support the principle of healthcare for all. The government has no mandate to end this. Those of us who value the NHS must defend it. Contact a peer and ask them to show their opposition to the competition regulations.

Dot Gibson National Pensioners Convention, Ken Loach Director, Spirit of '45, Paul Nowak TUC

• The BMA's call for the withdrawal of the NHS regulations may seem just technical, but nothing could be further from the truth. The regulations would in effect force commissioning doctors in the English NHS to put services out to tender – which hugely advantages large profit-hungry healthcare companies. The regulations would continue the parcelling up and selling off of many parts of our NHS. Lib Dem peers should ignore the whip and vote to defend our NHS from irreversible commercialisation.

Dr David Wrigley

Bolton-le-Sands, Lancashire