Just wanted to post a thumbs-up to Alamy. I alerted them to abuse of a presentation licence back at the beginning of Nov '18. They resolved this with the buyer at the end of December - the additional fee making the total sale worth more than 5x the original licence fee.
Although it may be difficult to track and prove abuses - and not all such reports have achieved success when reporting to Alamy - I wanted to post thanks when due as well as moans....and also to point out that it is worth hunting these abuses down!