Hi Gary
I agree it is an attractive model .I'm always pleased to see modified or kit bashed locos especially when the end result looks good.
I agree with the others in that it certainly started off as a Hornby B of B .
It may be of interest to members who are a lot younger than I ,to learn that the Late Albert Goodall an expert on all things Bullied, produced many white metal castings to modify Hornby streaks and even the Hornby-Dublo rebuilt West Country to enable just about every variant to be modelled.I have a Dublo Barnstable renamed Budleigh Salterton which I have "breathed on" using Albert's castings. He also produced very finely detailed instructions especially on powering and super detailing the Airfix/Dapol Biggin Hill. I have some of these also , if only I had the time to get them finished!
Another thing he did but did not publicise too much was a set of instructions and parts to convert the Airfix kit into a Merchant Navy. This entailed removing all the detail from the spam can sides( rivets and all) and lengthening the sides by 4 mm if I remember correctly , also the boiler top . Then use his paper sides as overlays to replace all the detail . These were in fact photocopies of scale drawings with detail scribed through and rivets embosed with a pin.The reverse of this was then painted and stuck onto the sides. I still have a set which he was good enough to let me have,and these are already painted . Also in the set were the correct cab sides and replacement look-outs , many other parts like the electric lights ,smokebox front, deflecters and tender bits ,ladders etc.
Albert probably knew more about these locos than O.V.Bulleid himself ! He was always prepared to pass on this knowledge to any one . I have about a dozen sheets of photcopied pictures of detail mainly taken of condemned locos at Barry and hand written notes with instructions and suggestions to help make these mods.
Not many modellers are prepared to modify or kit bash these days ,neither do they have to with all the superbly detailed and expertly painted and finished models now available from Hornby and Bachmann, but never the less I hope someone will find this post of interest .
best regards Tony (10001)