Here is a description of a Filling Station, from their website, https://thefillingstation.org.uk:

"Using monthly mid-week evening ‘celebration’ meetings held in non-church venues we have seen Christian communities grow in depth & numbers where a Filling Station has been opened. The Filling Station offers high quality speakers and teachers, contemporary sung worship and powerful, accessible prayer ministry.

Our meetings are designed to be overtly spiritual but presented in a manner that those outside the church would feel comfortable. Meetings are held monthly and aim to be short, sharp and focused in character. We find many people meet God through these meetings and faith is built up. Many church leaders find them an excellent additional ministry tool."