First a quick FYI - Azure=Blue, Argent=Silver, Or=Gold, Sable-Black
At the top is an open helmet which indicates that the coat of arms belongs to a member of the nobility and perched on top of that is a House Martin holding a recorder
The shield features three beetles (just because it balanced the design better than 4, not a deliberate slight or a dead Beatle or anything untoward apparently) and the Latin motto Amore Solum Opus Est which sort of roughly translates to "All You Need Is Love."
There's a completely blank musical staff across the centre. There's also a jigsaw-like strip enclosing them of which more later.
Those curly bits at the top of the wreath sure look like they're giving someone the finger.
The inscription, or Motto, partly hidden, "For God And The Empire" is the wording found on The Most Excellent Order of the British Empire (The M.B.E.) which The Beatles received...and which John Lennon later returned as a protest against the Vietnam war.
That's an MBE medal and the medal presented on receiving a knighthood (he was made a Knight Bachelor, the lowest order of Knights) hanging off of the bottom of the motto.
This bit is total guesswork, but as Sir George served as a pilot in the Royal Navy perhaps the predominantly blue (Azure) colour of the coat of arms is to represent the sea. The "jigsaw" motif in the middle of the shield is an heraldic device that represents clouds, so perhaps that Fess Nubly (jigsaw thingy) stands for the sky. Sea and sky - Navy pilot. Makes sense to me anyway.
The Zebra crossed by an Abbot's crozier at the bottom (the Badge, as opposed to the Crest) must be a reference to the cover of Abbey Road where the 4 Beatles are on a Zebra Crossing.
The official description from the Royal College of Arms is...
Arms: Azure on a Fess nebuly Argent between three Stag Beetles Or. Five Barrulets Sable.
Crest (upon a Helm with a wreath Argent and Azure): A House Martin proper holding under the sinister wing a Recorder in bend sinister mouthpiece downwards Or.
Badge: A Zebra statant proper supporting with the dexter foreleg over the shoulder an Abbot's Crozier Or.
And yes, I do have too much time on my hands at the moment and I actually had fun researching it.