Yes, any Nikah ceremony conducted by NikahService.co.uk provides a certificate that will be approved and signed by a representative of NikahService.co.uk as well as the Imam himself.

We believe in making Nikah available to all, independent of group or preference. We also assume that it should be done in full accordance with the Quran and Sunnah, with the understanding of noble companions. As such, we do not refer to any specific mosque.

A Nikah is performed with a proposal (Ejaab) by the male or female and acceptance (Qabool) by the male or female in the past or present tense
in the presence of two male Muslim witnesses or one male and two female witnesses with also stipulating the dowry (mahr).