The Big Lottery Fund have written some guidance to help you spread the word about your project. This page has links to PDF guidance which covers a range of topics – from holding events to raise awareness, to working with traditional and online media sources to gain some coverage. There are also sample press releases and consent forms for photographs that you can download.
This guidance is aimed at groups who have received Big Lottery Fund grants, but the advice could be taken by any group.
Source: Big Lottery Fund