Some views of  model during construction  

Main gear aligment was tricky, use a jig to get a symmetrical result.

The rear fuselage was sprayed metallic.

Than....

- Step 20: only "XR220" has the boogie strut which is correct.

- Step 25: I had to shorten the struts #51 + #52  about  2 mm in length. The main legs should be fitted now.

- Step 26: the part #65 suggests a blanking cover for test equipment in bay. It should be painted orange. 

- Step 27: the main gear doors and rear nose doors were set "closed" and  do not fit perfectly. I found out too late. It would have been better to set the doors in place at an earlier stage and sand them flat. 

It was now time for the decals. 
First, add a gloss finish before applying the excellent kit decals. I used some coats of Johnson Future (Klear).
All that is for the decals needed is supplied by Airfix. I opted to make the TSR-2 "XR220" of Cosford.

Finishing:
- set on the air brakes
- add extended raising jacks cylinders made from metal needles when opening up the canopies

 
Final touches:

- Around the canopy windows, metallic edges were painted. The inside of the canopies was painted light grey. The canopy windows were given a slight hue of "gold" suggested with very thinned transparant Tamiya Yellow acrylic paint. 

- the vertical and horizontal stabilizer show small gaps with the airframe when fitted, some white glue for gap filling will improve the looks. 

- the wingtip anti-collision lights are not mid-chord but at the leading edge tips. 

- some panel lines were slightly depicted with a fine brush and rivets shown with a toothpick with "off white" paint. 

- you may add red exhaust and intake cover plates to give some extra colour to your model made from card.
After decalling, the final details were added.

The "XR220" prototype was picked. Here is the result....

Weathering was only sparsely applied. Remember these were prototypes with only few flying hours. 
..
Gear and brakes

Note closed main gear doors. 

Cockpit with inside canopy details of the resin Pavla detailset, details made from scrap parts of etched metal and metal needles for the canopy raising jacks as can be seen here. These were made from metal pins and quite difficult to set on the model. But the result is great as there are very prominent

Instrument panels were a combination of Pavla painted resin parts and kit decals. Add colour details with a tooth pick.
Note also the "gold" sheen on the aft canopy. These was achieved with Tamiya Transparant "Yellow" thinned. 

The open airbrakes can also be seen here. On the real aircraft they did not close very well completely in line with the airframe. 

Note the small thin walkway lines (in blue grey) as provided in the kit

The pitot was made from a metal needle. 

The result.

.

Despite some problems, a nice kit and far better than my 25 years old 1/72 Contrail Vacuform kit.