The borough was formed from a combination of other boroughs, most of which are represented in the achievement. The Paschal lamb and the airscrew are from Hendon; the supporters are from Finchley; the crosses potent quadrate are from Friern Barnet. The red and white roses featured in the arms of both Barnet and East Barnet as a reference to the Battle of Barnet from the Wars of the Roses.
There is so much going on here, and I’m not sure any of it is good. Setting aside the fact that it’s basically impossible to make these arms work within the law of tinctures and the completely unnecessary compartment, my biggest complaint has to be the crest. First, that does NOT look like a propeller. I only figured out it’s supposed to be a two-bladed propeller seen from the front from the blazon. That’s not good. Secondly, it’s a fucking propeller. It’s already an allusion to aviation. You don’t need to put fucking wings on it. Third, I’m going to borrow Fox-Davies’ complaint about more modern crests: they were originally intended to be worn on top of a helmet. How the fuck are you supposed to balance that thing on your head? Would it even be identifiable from a distance? This is such a trainwreck, even the counterchanged reference to the Wars of the Roses isn’t enough to save it.
From Inquiries into the Origin and Process of the Science of Heraldry in England by James Dalloway, p412
Blazon: 1 azure on a cross argent five molets gules (Verney), 2 azure two chevrons or, on a canton argent a Paschal lamb gules (Euresby), 3 argent a fess vert overall a lion rampant gules (Whittingham), 4 argent a fess sable fretty or between three lions passant or (Buckland), 5 azure a saltire engrailed gules (Iwardby), 6 or a cross engrailed gules in the dexter canton a falcon of the second (Mussenden), 7 azure a chevron wavy between three griffins segreant or (Frome), 8 gules fretty argent on a chief or a lion passant of the field (Spigurnell), 9 or crusilly a lion rampant gules (Braos or Brewse), 10 gules two bendlets, one or, the other argent (Mylo), 11 barry of six dancetty argent and gules (Balun), 12 gules five lozenges conjoined in fess or (Newmarch), 13 vair three bendlets gules (Bray ancien), 14 argent three eagles’ legs erased sable (Bray moderne), 15 or on a fess gules three goats passant argent (Halighwell), 16 sable on a chevron between three bulls’ heads affronte argent, a fleur-de-lis of the field (Norbury), 17 gules a fess chequy argent and sable between six crosslets (Boteler), 18 gules two bars ermine (Pantulph), 19 gules two bendlets or (Sudley), 20 bendy of eight azure and or (Montfort), 21 azure bilette a lion rampant crowned or (De la Planche), 22 azure a fess between six cross crosslets argent (Haversham), 23 sable a cross between four gadflies or (Croysier), 24 azure a chevron or (Dabernon), 25 per bend counterchanged or and azure, an eagle displayed (Blacknall), 26 argent on a cross between two falcons in chief and as many lions in base a Paschal lamb (Pascal)