The website of the London ICC describes it as being part of a global movement of more than 130 churches worldwide.
It claims to be "not your average church", and its student-focused Instagram features slickly edited testimonies from young faces, along with vlogs and vox-pop interviews near university campuses.
People we have spoken to, who were all students when they became involved with the ICC, have raised allegations with the BBC about feeling pressured into making donations they could not afford.
The London International Christian Church told the BBC the allegation that undue pressure was put on the students for donations was untrue.
It said its doctrine was that giving must be "voluntary, in keeping with one’s means and never coerced or demanded".
Reporter: Jonelle Awomoyi
Producers: John Johnson, James Bryant
Graphics: Manuella Bonomi
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