They used to have scammy tactics selling jailbreak teams unlocks rebranded to their own name, and promising they had unlocks when none yet existed before apple database unlocking became unavailable. No idea if they're ok now, but based on past history I'd be cautious.
at least, based on evidence of archive.org history for what appears to be their old, now defunct address, of iphoneunlockuk.com which was same layout, and on last visit was redirecting to this site.