Krystal n chips says it perfectly. Aircraft maintenance people are hostile to graduates. Manufacturing and design people look askance at graduates who work in maintenance. That is however no reason to avoid graduating then going into maintenance; all work places have similar internal clashes and you cannot avoid conflict in the working world. Do what you want to do and take no notice of backbiters.
You looked for opinions, here's mine; you should get the degree first then if you really wish to work in maintenance rather than manufacturing, do the hands on and get the vocational qualifications. You won't need the degree for maintenance activities, but intellectual development produces the well rounded individual who is generally better fitted for higher positions later in the career path. I do stress that intellectual development is never a handicap.
There is nothing in the on-line prospectus for Kingston's aeronautical engineering courses that seems to lead to B1 or B2 licence qualifications. The various course contents do appear to produce a suitable foundation though. Go for it and Good Luck to you.
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Through difficulties to the cinema