Get Onキャンペーンと言って、よりよい職を得るの為の英語と算数の知識を向上しましょう、という政府が推進している運動の告知です。何故グレムリンなのかと言えば、サイトによると
「They bring to life the feelings of frustration, fear and isolation that adults can face in everyday situations when they are not able to do something which they feel they ought to be able to.
The aim of the advertising is to encourage adults facing this challenge to get rid of their gremlins and get on with their lives.
The latest phase of the campaign features people in the workplace finally defeating their gremlins by improving their skills and gaining a qualification.」