No - Labour's position is very clear: all existing exploration (plus any licences issued before Labour come to power, if such comes about) will continue / be honoured. What they've said is that there will be no new licences issued which - even if there was no climate change prevailing - makes perfect sense given the sharp decline in North Sea oil and gas stocks.
However, there will plenty of jobs created by a switch to alternatives, of which offshore wind looks the best bet. There was a news item in the past month that shows our reliance on non fossil sources of energy went over 50% for the first time, from a base line of about 10% earlier this century.
Everyone is AIMING for 2030 which is laudable, but let's not get our knicks.i.a.t. if the target is missed. The important thing is that an effort is being made.