Supermarkets will be forced to ban "guilt lanes" at supermarket checkouts and end two-for-one offers on junk food under Government plans to tackle child obesity, The Telegraph has learned.

Jeremy Hunt, the Health Secretary, is planning a wave of new legislation as part of a crackdown, including a 9pm watershed on advertising products high in sugar and salt from 2020.

Ministers will also consider a ban on the use of cartoon characters and celebrities to promote junk food, and consult on new legislation to bar retailers from selling energy drinks to under-16s.

The policies are outlined in the Government's child obesity strategy, which has been seen by The Telegraph. Ministers from other departments are currently being consulted on the plans.

The approach has been the subject of fierce debate in Cabinet with the Health Secretary pushing hard for the tough measures.