Practices have been asked to "act collectively" to reject "underfunded" enhanced services by their Local Medical Committee (LMC).
In the March newsletter, Surrey and Sussex LMC wrote practices that turn down enhanced services because the workload was not sufficiently remunerated would be supported by the LMC.
The LMC made the announcement on the basis of the pay uplift announced in the Doctors and Dentists Remuneration Board review, which has been described as "marginal".
The newsletter reads: "Our success can only be achieved if practices are willing to act collectively and accept that they may have to decline to provide unfunded, or under-funded, services.’
"The LMC will continue to support practices who decline such work and, although such decisions are professionally challenging, this may be the only route to securing the longer-term future of general practice and the provision of a safe service for our patients."