True, however his influence and JI influence is declining, mainly because he and JI believe in democracy which has got Islamists nowhere so now islamists that oppose democracy (HT, Taliban, Al-Qaeda etc.) are gaining more influence
In Pakistan the Jamaati influence is just beginning. Maududi's idea was that Islam had to be injected into the body politic of Pakistan so it didn't just become institutionalised from on top, it seeped up from below. For example the persecution of the Ahmadiya began in the 1960's after violent protests from the JeI. They were always pushing away at the fabric of society, and eventually when General Zia took power and radicalised things to the maximum it was at the behest of the JeI. He was a personal disciple of Maududi.
They have always focussed on being organised not to win elections, but to bully and coerce those who win elections or take power by whatever means. In the UK, the JeI are influential in terms of laying out the infrastructure for Islamic politics, whether through the mosques, study centres, pressure groups. The Pakistani JeI connection is far more influential than the Ikhwan, which is mostly an Arab ideological group, because there are more Pakistanis than Arabs in Britain. Right back from 1989, when the Salman Rushdie affair kicked off modern Islamic identity politics big style, it was the JeI who were at the forefront of that, and went on to form the MCB which is a front organisation for the Jamaati.
They have never allowed British Pakistani Muslims to settle their identity on their own terms, they have set the general tone and atmosphere for Islamic politics and influenced a very narrow, insular culture deeply influenced by Maududi's ideas that Muslims can never be fully part of a non Muslim society, that Muslims need an Islamic space separate from non Muslims. This has been detrimental for Muslims and wider society, especially in the milltowns in the north.