▁the ▁Brit ons ▁seemed ▁ready ▁to ▁come ▁to ▁terms . ▁According ▁to ▁August us ' s ▁Res ▁Gest ae , ▁two ▁British ▁k ings , ▁Dub nov ella un us ▁and ▁T in com arus , ▁fled ▁to ▁Rome ▁as ▁supp lic ants ▁during ▁his ▁reign , ▁and ▁Stra bo ' s ▁Geography , ▁written ▁during ▁this ▁period , ▁says ▁Britain ▁paid ▁more ▁in ▁custom s ▁and ▁duties ▁than ▁could ▁be ▁raised ▁by ▁tax ation ▁if ▁the ▁island ▁were ▁conquer ed . ▁ ▁By ▁the ▁ 4 0 s   AD , ▁the ▁political ▁situation ▁within ▁Britain ▁was ▁in ▁fer ment . ▁The ▁C atu vel la uni ▁had ▁disp la ced ▁the ▁Tr in ov antes ▁as ▁the ▁most ▁powerful ▁kingdom ▁in ▁south - e astern ▁Britain , ▁taking ▁over ▁the ▁former ▁Tr in ov ant ian ▁capital ▁of ▁Cam ul od un um ▁( Col chester ). ▁The ▁At reb ates ▁tribe ▁whose ▁capital ▁was ▁at ▁Cal le va ▁At re bat um ▁( Sil chester ) ▁had ▁friendly ▁trade ▁and ▁diplom atic ▁links ▁with ▁Rome ▁and ▁Ver ica ▁was ▁recogn ised ▁by ▁Rome ▁as ▁their ▁king , ▁but ▁Car ata cus ' ▁C atu vel la uni ▁conquer ed ▁the ▁entire ▁kingdom ▁some ▁time ▁after ▁ 4 0 ▁AD ▁and ▁Ver ica ▁was ▁exp elled ▁from ▁Britain . ▁ ▁Cal ig ula ▁may ▁have ▁planned ▁a ▁campaign ▁against ▁the ▁Brit ons ▁in ▁AD ▁ 4 0 , ▁but ▁its ▁execution ▁was ▁unclear : ▁according ▁to ▁Su eton ius ' ▁The