Barrel and keys for Seitz SK5 Gas Locker Door

I think the barrel can be removed,? is there a screw on the rear of the current barrel  with a large washer?

Hopefully some one will be along if that is not correct 

Do you need one of these:-

https://www.key2code.co.uk/store/p907/High_Security_Caravan_%26_motorhome_lock_barrel_removal_tool.html#/

I bought it to remove the barrel from my water fill cap.

Colin

Thanks to both for the reply.

There is a screw on the inside/back of the handle assembly which when unscrewed allows the whole handle to be removed from the housing. That means I can switch the handles and keep the existing barrel lock... strange way of doing things but I suppose that is how it is.

thanks again

What is "strange" about keeping the lock same key?

Thanks for your reply nonplussed.... what is strange you ask? Perhaps you misunderstood my comment or perhaps I expressed it badly....of course I'm overjoyed at the prospect of keeping the same barrel and key. What I found strange was buying a new frame with a new handle that didn't include the barrel and keys to lock it... never having bought one before I thought it was strange - I mistakingly thought the frame I bought it would come as a complete item with a new handle, barrel and key(s) to lock it - it didn't - and Prima Leisure have today  explained why - so I have learnt something - and I'm delighted that I can use the same handle with the original barrel from my old damaged frame - so all is well - we learn and we move on.... 

I have learned through 3/4 century that every day is a school day!