Ok Done some finial Editing on the BAC 1-11 Series Airliners! Each are in separate classes.
200 Series (first production model)
300/400 Series- difference between the 200 and 300/400 series was improved range, slightly more powerful engines and 25 cabin port holes per side of the fuselage (24 on the 200 series).
475 Series- Uses the 300/400 Series fuselage mated to with the 500 Series Wings and engines. However the internal space of the cabin inside the fuselage was increased to carry 10 additional passengers (89 Pax) over the 200/300/400 (79 Pax)
500 Series- Longer fuselage, longer/greater wingspan, more powerful engines
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"The British Air Farce have droopped their bums on the water works..They have scored a direct hot on the pimps"- British agent/gendarme Officer Crabtree, "Allo,Allo."