The Allied aircraft “bullseye” symbol, in silhouette.
What?
A bagpiper in kilt
A sheep
A homeless Irish navvy
A butcher’s apron.
An Overpaid Banker.
007
Oxford skyline - City of the Dreaming Spires
Bristol suspension bridge
Roast beef - probably not great in sillouette.
Okay, okay - Clifton Suspension Bridge!
I think there’s definitely a hat theme if you want - bowler hats, silly police hats, even sillier “why yes I am wearing three vertical feet of bear fur on my head” bearskin hat.
Black cabs would be easier to depict in silhouette, I imagine, as would a teapot. Or how about the Beatles?
Ooh, ooh, long-forgotten question has surfaced in my mind: what, exactly, is the benefit gained from a toast rack? I mean, I understand that you make your toast and then…put it in the toast rack for serving, I guess, in a family breakfast or something, but…why?
The London Stone
The White Tower
Ravens at the Tower of London
The Crown Jewels
Any Arthurian imagery
A red post box.
I’m not British, but my father is, so I asked him. He says that instead of passing around a plate of stacked toast around the breakfast table, they’d use a toast rack. That way, instead of the plated toast in getting soggy due to steam going straight into the slice above it, the steam would escape elsewhere and leave the toast nice and crisp. He didn’t seem especially enthused about the contraption, though- says the toast dried out too quickly that way.
I’d like to second Little Nemo’s nomination of palace guards. Those hats were the first thing that came to my mind.
A whole bunch of illegal immigrants being dragged off a container lorry.
People signing on at the Dole office
13 year old kids buying booze and ciggies at the corner shop
Plus what jjimm said
I was about to post my perspective as someone who actually is a civil servant, but then read this and thought “why bother?”.
Yes, it is very much a cheap, immature shot.
Most of the ones I was going to suggest have already been mentioned, but I’ll add:
Jaguar (or Rolls-Royce) motorcar
Lee-Enfield rifle
Darts (and dart board)
The Times (not sure how you’d render that in silhouette, but there you go)
The Flying Scotsman
Harrier Jump Jet
Gas-lamp
Steam Engine (industrial or locomotive, take your pick)
Candlestick Telephone
Steamship
Pith Helmet
Monopoly Board
Quaint Village With A Terrible Secret 
London Eye
Wembley Stadium (old one and new)
Changing of the Guard
Angel of the North
Traffic jam on M25
Sausage and mash
Jellied eels
Miners trudging t’pit
Rain drops
Apples
Bucket and Spade
Roses
The problem though is that we’ve all become so homogenised now that we’re losing our cultural identities.
“To see the English mist roll through the dell”
>>Roger Whittaker voice<<
Ok, which idiot suggested a cricket bat, I mean the English are’nt even good at the game, keep getting whipped by ex colonials.
Well if we didn’t let you win you ex-cons and descendants of would steal things off us:D
Ha, awesome. Now I feel like watching Midsomer Murders.