This is the probably the best thread to put this list of AST.396 designs (the HS.1187 has a separate thread as do some of the super Harriers).
BAC Designs
EAG 8404C(1): 1x Pegasus 15 scaled x1.60 with PCB; AUW 49,000lb; max speed 750kts; TO to 50ft 1,500ft
EAG 8404C(11): 1x scaled RB.422-04 26,860 dry/ 40,000lb reheat; AUW 35,500lb; max speed 750kts; TO to 50ft 1,500ft
EAG 8404C(11): 1x RB.422-04 25,580lb dry/ 38,100lb reheat; AUW 33,700lb; max speed 750kts; TO to 50ft 1,500ft
EAG 8404C(11): 1x scaled Pegasus 15-03 33,600lb dry/ 48,230lb PCB; AUW 42,600lb; max speed 750kts; TO to 50ft 1,500ft
EAG 8404D: RB.422-04 with PCB; AUW 34,000lb
EAG 8413A: 2x RB.199-34R and 2x XJ.99; AUW 48,000lb (combat M0.8), 39,000lb (combat M1.1);
EAG 8413B (light alloy fuselage): 2x RB.231-02 and 2x RB.228-02 lift engines; AUW 35,000lb
EAG 8413B (CFRF fuselage): 2x RB.231-02 and 2x RB.228-02 lift engines; AUW 33,000lb
EAG 8413D: 2x RB.231-02 and 2x RB.228-02
EAG 8461 (CTOL): 1x RB.231-02 10,900lb dry/ 15,600lb reheat; AUW 22,400lb; max speed 750kts; TO to 50ft 2,750ft
EAG 8461 (CTOL): 1x scaled RB.231-02 9,440lb dry/ 13,510lb reheat; AUW 21,700lb; max speed 750kts; TO to 50ft 3,000ft
EAG 8461 (CTOL): 1x scaled RB.231-02 6,170lb dry/ 8,830lb reheat; AUW 19,300lb; max speed 750kts; TO to 50ft 4,000ft
EAG 8461B: 1x scaled RB.231-02 11,660lb dry/ 16,690lb reheat & 1x scaled RB.228-02 16,230lb lift engine; AUW 26,300lb; max speed 750kts; TO to 50ft 1,500ft
EAG 8461B: 1x RB.231-02 10,900lb dry/ 15,600lb reheat & 1x RB.228-02 12,070lb lift engine; AUW 25,200lb; max speed 750kts; TO to 50ft 2,300ft
EAG 8472: 8404C(11) with RB.422 engine
EAG 4678: tailless delta; 2x scaled RB.231-02 9,650lb dry/ 13,800lb reheat & 2x scaled RB.228-02 10,680lb lift engines; AUW 33,000lb; max speed 750kts; TO to 50ft 1,500ft
P.66: 3 designs leading up from P.59 trainer development to variant of Panavia PANNAP fighter
BAC also studied a single-seat MRCA variant with reduced avionics. It was judged to closely approach AST except for T-O and landing distance of 3,250ft to 50ft. A radius of action of 240nm with a 2,300ft TO run could be achieved with RB.199-34R engines and extra fuel in a front fuselage extension or modification of the rear cockpit space. Using RB.199-42R would reduce TO to 2,000ft. If fitted with RB.231-02R engines the higher dry thrust would allow 2x 15,500lb RB.228-02 lift engines to achieve a TO to 50ft in 1,200ft at 48,000lb AUW.
HSA Designs
HS.1182: similar to BAC P.66 series
HS.1186: vectored thrust
HS.1189-1: 1x scaled RB.199-36 14,230lb dry; AUW 24,500lb; max speed 650kts; TO to 50ft 3,000ft
HS.1189-5: 1x scaled RB.199-41 6,160lb dry; AUW 16,800lb; max speed 650kts; TO to 50ft 4,500ft
HS.1189-9: 1x Pegasus 15-02 24,500lb dry; AUW 28,000-32,400lb; max speed 750kts; radius of action 110-218nm; TO to 50ft 4,500ft
HS.1191-1: tailless delta; 1x RB.199-42R 9,700lb dry/ 17,000lb reheat & 4x RB.227-01 10,780lb lift engines; AUW 29,000lb; max speed 750kts; TO to 50ft 1,000ft
HS.1191-2: tailless delta; 1x scaled RB.199-42R 7,440lb dry/ 13,040lb reheat & 4x scaled RB.227-01 8,270lb lift engines; AUW 27,000lb; max speed 750kts; TO to 50ft 1,500ft
HS.1184-1: 1x scaled Pegasus 15-03 25,340lb dry/ 36,380lb PCB; AUW 27,000lb; max speed 635kts; TO to 50ft 1,650ft
HS.1184-7: 1x scaled Pegasus 15-02 28,600lb dry; AUW 27,000lb; max speed 635kts; TO to 50ft 1,650ft
HS.1184-8: 1x scaled Pegasus 15-02 22,400lb dry & 1x scaled RB.227-01 9,860lb lift engine; AUW 29,000lb; max speed 650kts; TO to 50ft 1,500ft
HS.1190: 1x RB.199-34R 8,530lb dry/ 15,300lb reheat; AUW 24,500lb; max speed 750kts; TO to 50ft 2,900ft
HS.1190: 1x scaled RB.199-34R 7,630lb dry/ 13,690lb reheat; AUW 24,000lb; max speed 750kts; TO to 50ft 3,000ft
HS.1190-2: 1x RB.199-42R 9,700lb dry/ 17,000lb reheat; AUW 24,000lb; max speed 750kts; TO to 50ft 2,500ft
HS.1190-2: 1x scaled RB.199-42R 6,070lb dry/ 19,640lb reheat; AUW 22,800lb; max speed 750kts; TO to 50ft 3,000ft
HS.1185-9: 1x scaled Pegasus 15-03 12,650lb dry/ 18,160lb PCB; AUW 28,000lb; max speed 750kts; TO to 50ft 4,500ft
HS.1185-9: 1x scaled Pegasus 15-03 14,640lb dry/ 21,010 PCB; AUW 32,400lb; max speed 750kts; TO to 50ft 4,500ft
HS.1187-5: Pegasus 13-13 scaled x1.05 with PCB; AUW 45,000lb;
HS.1192-1: 2x RB.231-02 and 2x RB.228-03; AUW 42,000lb
Radius of action is 110nm for all designs
Source: documents in DEFE 72/12