GPs may be forced to go on strike, a leading medic said today after family doctors overwhelmingly opposed a new government contract that threatens to bankrupt practices.

According to the British Medical Association, almost two in three practices report concerns over short and long-term financial viability, while more than half have experienced cashflow issues in the last year.

The new contract offers practices a 1.9 per cent increase in funding, but the BMA says it's not enough to stop them from cutting services or shutting down.