These common barrel sets were available up until a few years ago. With a little luck someone will check their inventory against there list of stock and look to making them again ( looks to the UK...)

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SooperDooperMiniCooperExpertEngineering

All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.

Hi there,
Take the key for the door lock to Locksmith's Supplies & they'll easily decode it's "FS" number.
The door lock barrel is the hardest one to remove, so change all the other barrels to the same key as the door lock, as the ignition & boot barrels are very easily removed. Locksmiths Supplies carries stock of the tumblers for these barrels.
If Locksmith's Supplies in Melbourne are reluctant to do it (because they are wholesale only), ask them to recommend a good automotive locksmith.
Nelson locksmiths in Clovelly Park Adelaide are good at fixing Mini locks, as they are only a few doors from Minisport...
They keyed all my barrels alike & stamped my keys with the "FS" number.
Because your fuel tank caps are not original (being locking), I'm unsure if you can use the "FS"keys on them.
Hope this helps!

It's not that hard to do yourself. You pull the barrel apart and rearrange and file down the tumblers till level when the new key is fitted.

As above best to modify the boot and ign as they are easier to remove than the door.

Unless the fuel cap is same key type they'll prob need to remain different. I wonder were the genuine BMC ones able to use the same key?

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68 Morris Cooper S Mk1 (*ex 78 1275 LS 4th last built, 70 Morris 1500 OHC & 70 MiniMatic)

There are Wilmot Breedon locking fuel caps that are able to be keyed alike, they still pop up on ebay occasionally.
I think these might have been the ones sold by BMC as accessories.

I bought 2 black locking fuel caps from John Smidt a few years back to replace 2 similar ones I had on previously.
All 4 had the same key...

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

How do you take a key barrel out of a round nose dash ignition switch
It only has one hole

Going on memory here but I think you insert the key that fits and then push a locking pin thru and turn the key and the barrel will then slide out.

....I think.

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68 Morris Cooper S Mk1 (*ex 78 1275 LS 4th last built, 70 Morris 1500 OHC & 70 MiniMatic)

Ok i have no key but any key or screw driver fits so ill give it a go

Yes but to withdraw he barrel all the plungers need to line up. In other words you need to pick the lock to get it apart. This is where a locksmith can help.

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68 Morris Cooper S Mk1 (*ex 78 1275 LS 4th last built, 70 Morris 1500 OHC & 70 MiniMatic)

So these caps can be keyed alike to the door and ignition?

Minisport in South Australia also sell these caps. If you know your key number it might be possible to ask for the matching numbered cap.

Would the barrels from these http://www.minispares.com/product/Classic/Body/Doors/Locks/24A1140KIT.aspx?030403&ReturnUrl=/shop/classic/Body/Doors/Locks.aspx|Back%20to%20shop fit an aussie door handle?

They would fit an 850 with sliding window doors.
The Oz windup door handles are stronger and longer. 850 handles were notoriously easy to break.
I bought some UK Mk1 lock barrels in once, but I was told they won't fit our windup door locks.
But as I said, John Smidt says you can modify boot lock barrels to fit. I don't have the details.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Yeah I knew the handles wouldn't fit, but I was wondering if we could use just the barrels but I guess we aren't that lucky