The Airfix kit can be made into a B.I.6 or B.20 version.
 
 

A model was made to represent a RAF Suez crisis Canberra B.2 

The kit is basically good, but the wing tip tanks seem to be inaccurate (too large). I did not change this. 

The model as made here in another PRU blue and grey scheme with black & white Suez campaign stripe markings. The decals came from Modeldecal set#26.  

The Airfix 1/72 kit was further detailed with the bomb bay as supplied with the kit and by adding a small window below left of the cockpit.

 

 
Airfix model

All Airfix and other Canberra kits had their panel lines sanded off and re-scribed in the models using an Olfa P-cutter.

Balancing the model is quite difficult, so I added various sorts of "pogo sticks".... crew, probes, etc 

Airfix model (2)   Note dayglow orange trim

The old FROG kit no. F203 of the Canberra represents a Canberra type  B.I.12 with the offset cockpit.

The parts are in hard plastic and basic as usual in those dyas with FROG. 

Decals were for:  

- RAF no.88 squadron B(I) mk.8 at Wildenrath in West Germany in 1960 ;

- South African Air Force, B(I) mk.12 of no.12 squadron at Waterkloof in 1969.

The model is not so bad, and by refining it, it can be build into a nice model. All panel lines were sanded off and rescribed. The wheel bays were added with boxing in through thin plastic cart. 

The model was given extra detail by making the weapons cannon bay open ...

...and adding details such as the exhaust and openings on the front ends of the nacelles.  Also the crew entry hatch was opened.

A model representing a South African AF B.I.12 was made with a different overall colour finish of matt PRU Blue. (not high speed silver as per kit). 

 scratch made canon bay

  ... at Waterkloof...

... flying over Waterkloof

For more information about the South Africa Air Force, look at the Mirage page here...

This kit was also released first by NOVO of the USSR and later on by Revell kit no 0389 of Germany.