Tony Lanfranchi was BARC and BRDC/BRSCC saloon car champion of 1972-73 racing Soviet Moskvich entered by SATRA Motors. Then championships' rules were changed to engine capacity classes instead of price classes and Lanfranchi changed to different cars. SATRA Motors and various "privateers" were still using Moskvich cars in 1974 and then SATRA switched to Lada cars, "privateers" raced Miskviches in 1975-76. In 1977-80, I presume, only Ladas raced in Britain but I have little clues.
Here's list of races in which Moskvich and Lada cars could race. If known, starting numbers are given according to photos or entry lists in programmes.
05.03.1972 Brands Hatch 220
18.03.1972 Oulton Park 30
19.03.1972 Thruxton 32
26.03.1972 Mallory Park
03.04.1972 Brands Hatch
29.04.1972 Oulton Park 193
30.04.1972 Mallory Park
07.05.1972 Snetterton
14.05.1972 Silverstone
14.05.1972 Ingliston
21.05.1972 Brands Hatch 156, 157, 159
27.05.1972 Rufforth
28.05.1972 Croft
29.05.1972 Silverstone
11.06.1972 Silverstone
18.06.1972 Mallory Park
02.07.1972 Silverstone
08.07.1972 Oulton Park
23.07.1972 Mallory Park
30.07.1972 Snetterton
06.08.1972 Mallory Park
12.08.1972 Oulton Park 251, 252
13.08.1972 Brands Hatch 130, 131, 132
20.08.1972 Brands Hatch
26.08.1972 Oulton Park
27.08.1972 Mallory Park (16), 19, (20)
03.09.1972 Brands Hatch
10.09.1972 Silverstone 131, 132, 133
10.09.1972 Brands Hatch
24.09.1972 Brands Hatch
01.10.1972 Brands Hatch 239, 240
08.10.1972 Mallory Park
14.10.1972 Oulton Park
29.10.1972 Snetterton
02-07.12.1972 RAC Rally 131, 137, 143
04.03.1973 Brands Hatch
11.03.1973 Mallory Park
18.03.1973 Silverstone 292, 293, 294
25.03.1973 Thruxton
31.03.1973 Oulton Park
01.04.1973 Silverstone
20.04.1973 Snetterton
23.04.1973 Silverstone
06.05.1973 Brands Hatch
12.05.1973 Oulton Park 28, 30, 32
13.05.1973 Silverstone
20.05.1973 Silverstone
28.05.1973 Snetterton
10.06.1973 Brands Hatch
17.06.1973 Thruxton
01.07.1973 Silverstone
07.07.1973 Tour of Britain, Oulton Park 32, 33, 34, 35, 36, 38, 39, 40, 41
08.07.1973 Tour of Britain, Brands Hatch 32, 33, 34, 35, 36, 38, 39, 40, 41
15.07.1973 Cadwell Park 22, 23, 24, 27
21.07.1973 Oulton Park
22.07.1973 Mallory Park
29.07.1973 Snetterton 383, 384, 385, 386, 387
29.07.1973 Mallory Park 23
05.08.1973 Mallory Park
11.08.1973 Oulton Park 128, 130, 131, 132, 137
12.08.1973 Croft
27.08.1973 Castle Combe
02.09.1973 Rufforth
09.09.1973 Brands Hatch
09.09.1973 Cadwell Park 140
16.09.1973 Thruxton
23.09.1973 Brands Hatch
30.09.1973 Mallory Park 76, 77, 78, 80
07.10.1973 Oulton Park 200, 201, 202, 203, 204
27.10.1973 Oulton Park 126, 127, 128, 130, 131, 134
28.10.1973 Thruxton
03.03.1974 Brands Hatch
09.03.1974 Oulton Park
17.03.1974 Silverstone
24.03.1974 Thruxton
30.03.1974 Oulton Park
31.03.1974 Silverstone
14.04.1974 Snetterton
15.04.1974 Brands Hatch
21.04.1974 Llandow
27.04.1974 Oulton Park
05.05.1974 Oulton Park
12.05.1974 Snetterton
19.05.1974 Brands Hatch
27.05.1974 Mallory Park
09.06.1974 Silverstone 73, 74, 75, 76
16.06.1974 Brands Hatch
23.06.1974 Mallory Park
30.06.1974 Silverstone 51, 52, 53, 54
13.07.1974 Tour of Britain, Oulton Park 92, 94, 96, 97, 98, 99, 100
14.07.1974 Mallory Park
21.07.1974 Cadwell Park
27.07.1974 Oulton Park
28.07.1974 Snetterton
04.08.1974 Silverstone
10.08.1974 Oulton Park
11.08.1974 Brands Hatch
18.08.1974 Thruxton
26.08.1974 Silverstone 31, 32
08.09.1974 Silverstone
15.09.1974 Brands Hatch
22.09.1974 Thruxton
29.09.1974 Mallory Park
06.10.1974 Oulton Park 63, 64
13.10.1974 Mallory Park 1, 2
27.10.1974 Thruxton
03.11.1974 Brands Hatch
02.03.1975 Brands Hatch
08.03.1975 Oulton Park
16.03.1975 Silverstone
31.03.1975 Brands Hatch 55
13.04.1975 Llandow
20.04.1975 Thruxton
27.04.1975 Silverstone
04.05.1975 Brands Hatch
18.05.1975 Mallory Park
26.05.1975 Snetterton
01.06.1975 Cadwell Park
08.06.1975 Silverstone
15.06.1975 Snetterton
22.06.1975 Croft
28.06.1975 Oulton Park
29.06.1975 Mallory Park
13.07.1975 Cadwell Park
26.07.1975 Oulton Park
27.07.1975 Snetterton
09.08.1975 Oulton Park
10.08.1975 Mallory Park
17.08.1975 Brands Hatch
25.08.1975 Brands Hatch 91
31.08.1975 Silverstone
07.09.1975 Brands Hatch
14.09.1975 Thruxton
21.09.1975 Mallory Park
04.10.1975 Oulton Park 96 (L), 107 (M)
05.10.1975 Brands Hatch
12.10.1975 Mallory Park
19.10.1975 Snetterton
26.10.1975 Thruxton
02.11.1975 Brands Hatch 69
07.03.1976 Brands Hatch
14.03.1976 Silverstone
21.03.1976 Mallory Park
27.03.1976 Oulton Park 71 (L), 79 (M)
28.03.1976 Silverstone
04.04.1976 Thruxton
11.04.1976 Cadwell Park
16.04.1976 Oulton Park 74 (L)
18.04.1976 Snetterton
19.04.1976 Brands Hatch 74
25.04.1976 Silverstone
02.05.1976 Mallory Park
09.05.1976 Thruxton
15.05.1976 Oulton Park
16.05.1976 Snetterton
23.05.1976 Brands Hatch
30.05.1976 Brands Hatch
31.05.1976 Snetterton
06.06.1976 Silverstone
13.06.1976 Snetterton
20.06.1976 Silverstone 74 (L), 75 (M), 83 (L), 86 (L)
27.06.1976 Croft
25.07.1976 Ingliston
01.08.1976 Snetterton
08.08.1976 Thruxton
14.08.1976 Oulton Park 83 (L)
15.08.1976 Mallory Park
29.08.1976 Mallory Park 74, 86 (L)
30.08.1976 Snetterton
05.09.1976 Silverstone
12.09.1976 Brands Hatch
18.09.1976 Oulton Park
26.09.1976 Mallory Park
03.10.1976 Snetterton
10.10.1976 Mallory Park
17.10.1976 Brands Hatch
31.10.1976 Thruxton
24.10.1976 Brands Hatch
27.03.1977 Thruxton
03.04.1977 Silverstone 63 (L)
17.04.1977 Cadwell Park
01.05.1977 Snetterton
29.05.1977 Brands Hatch
07.06.1977 Donington Park 64 (L)
26.06.1977 Brands Hatch
10.07.1977 Snetterton
31.07.1977 Donington Park
07.08.1977 Croft
14.08.1977 Brands Hatch 64
04.09.1977 Silverstone
24.09.1977 Oulton Park
08.10.1977 Oulton Park
23.10.1977 Mallory Park
30.10.1977 Thruxton
12.03.1978 Thruxton
02.04.1978 Silverstone
22.04.1978 Oulton Park
30.04.1978 Donington Park
07.05.1978 Brands Hatch
14.05.1978 Mallory Park
21.05.1978 Donington Park
29.05.1978 Thruxton
04.06.1978 Silverstone
11.06.1978 Brands Hatch
25.06.1978 Cadwell Park
02.07.1978 Mallory Park
22.07.1978 Oulton Park
23.07.1978 Donington Park
28.08.1978 Thruxton
16.09.1978 Oulton Park 84 (L)
24.09.1978 Snetterton
29.10.1978 Thruxton
04.03.1979 Brands Hatch
11.03.1979 Thruxton
01.04.1979 Snetterton
29.04.1979 Lидден-ХиLL
06.05.1979 Cadwell Park
12.05.1979 Oulton Park
20.05.1979 Snetterton
03.06.1979 Mallory Park
01.07.1979 Brands Hatch
05.08.1979 Croft
02.09.1979 Silverstone
15.09.1979 Oulton Park
23.09.1979 Croft
30.09.1979 Thruxton
14.10.1979 Mallory Park
28.10.1979 Thruxton
02.03.1980 Brands Hatch
16.03.1980 Silverstone
13.04.1980 Mallory Park
27.04.1980 Thruxton
10.05.1980 Oulton Park
11.05.1980 Croft
01.06.1980 Cadwell Park
22.06.1980 Mallory Park
29.06.1980 Brands Hatch
06.07.1980 Snetterton
10.08.1980 Brands Hatch
24.08.1980 Snetterton
31.08.1980 Silverstone
20.09.1980 Oulton Park
12.10.1980 Snetterton
18.10.1980 Oulton Park
26.10.1980 Thruxton
More to follow but everything you know is welcome.