By Susanna Twidale LONDON (Reuters) -Britain is expected to publish its plan next week on how to boost domestic energy supplies to try to tackle spiralling prices and reduce the amount of imported oil and gas from Russia after its invasion of Ukraine. The government has said all options are on the table. The following are some of those investors and consumers can expect. NORTH SEA OIL AND GAS The British government has in recent weeks urged North Sea producers to ramp up oil and gas output as Europe tries to reduce its reliance on energy from Russia. Shell has released an amended plan for the …