Fill the gap

[devadiva]

1970,1974,1976,1979,1990,,,,,,,,,,,,,,,2007
Barber................Botterill, Lester.
A,D...............P,Q,R.
1907,1913,1931,1933,1949...............1973.
�112,�116,�121,�126.50,...................�135.50.

[jno]

first one looks like new prime ministers, so 1997 for Blair

[jno]

last one is TV licences, but I'm not sure what the previous fee was.

[devadiva]

Thanks for your help - will try google

[Metz]

1907,1913,1931,1933,1949...............1973 - 1951?

[devadiva]

Why Metz?

[Metz]

sorry didn't realise you needed the reason lol think they are prime numbers

[Trevilino]

Could be "O"

A, D, P, Q & R all have just the one completely closed shape. B has two closed shapes, C,D,E,F,G,H,I,J,K,L,M,N all have none then O,P,Q,R each have one enclosed shape.

[devadiva]

Thank you all for your help much appreciated