I am not sure whether you saw this recently but MPI has launched a grant scheme from their charitable foundation to incentivise smaller agencies to take on an events apprentice. Maybe worth taking a look to see if you qualify?

http://www.citmagazine.com/article/1435214/mpi-uk-i-launches-events-apprenticeship-support-scheme?bulletin=cit-daily-bulletin&utm_medium=EMAIL&utm_campaign=eNews%20Bulletin&utm_source=20170601&utm_content=www_citmagazine_com_artic_3