The Range Rovers, picnic hampers and tweed jackets would be non-existent.
Replaced with a uniform of designer gear, and a diet of copious amounts of lager rather champagne. While Twickenham's anthem of 'Swing Low, Sweet Chariot' would turn into something less palatable, no doubt.
But one thing remaining the same would be a sports team having the privilege of being able to call a world class stadium their home. Chelsea moving to Twickenham makes a lot of sense.
It feels like a logical thing to do for both the football club and the Rugby Football Union (RFU). The idea has been floated due to the fact Chelsea want to either redevelop Stamford Bridge or build a new stadium near Earls Court, and would need somewhere to host their home games in the meantime.
While the RFU are in desperate need of extra income, due to the constant battle of grappling with record losses. And if Chelsea did move to England HQ, as it is known in rugby parlance, we would get to find out if the London club is as big as it thinks it is.
Twickenham, when full, is a one of the finest stadiums in the UK. It holds 82,000 and is capable of generating a scintillating atmosphere. But could Chelsea fill it?
This remains to be seen, but what Twickenham is also good at is retaining spectators long after the final whistle of an event there. The vast space surrounding the ground is littered with places to eat and drink, albeit at exorbitant prices.
Those who love their 'rugger' appear reluctant to leave the place after a game, and perhaps Chelsea could find ways to keep their own fans outside following matches. Although it is worth noting that getting to and from Twickenham can be nightmarish.
Chelsea are looking to replace or redevelop Stamford Bridge but may need a temporary home elsewhere (Image: UEFA via Getty Images)
The traffic is unplayable, there is no direct underground link and the overland trains turn those travelling into sardines in a can. RFU chief executive Bill Sweeney has suggested Richmond Council would be reluctant to allow Chelsea becoming new tenants of Twickenham.
Twickenham is slap bang in the middle of one of the most affluent London boroughs, and the local residents have strong objections to how many events take place. So the prospect of thousands of Chelsea fans flooding the leafy suburban streets will fill them with dread.
But London Mayor Sadiq Khan is keen for discussions to take place, at least. "My message to Chelsea is come and speak to us in relation to what you want to do," he said.
"Chelsea are the victims of their success, and Stamford Bridge is now too small for them. After all, this is a team that has twice won the Champions League. We work closely with all seven of our Premier League clubs but I'm sure Chelsea look with some envy at the stadiums some of their rivals in London have."
With respect to Khan, Chelsea haven't won the title since 2017, or any silverware at all since 2018. They aren't even the biggest club in London. Which makes Twickenham the acid test of their status in the game.
Because if this place proves to be unworkable then Wembley could be an option, but this would be a whole new challenge altogether.