I agree, I don’t find it unusual. It also isn’t always related to the grandparents having parented to very high standards. It’s more that there are pressing and very dangerous issues for the children and, potentially, if one seeks legally advice this would be an option given in specific situations. I believe it’s easier for a family member to make an application for wardship compared to a local authority (not to successfully get the wardship, just to apply) as it has to fit a certain remit. Once the court provides this wardship, it’s effective immediately.
As someone mentioned earlier, I’d imagine it might be a quicker way of preventing someone running away/going abroad with that child than relying on Police and Social Services, who need to gather a lot of evidence to do receive court orders. It also may have been a situation that was felt ok enough at the time day to day, but could quickly escalate if (for example) they left the country. As far as I can see from the Children’s Act 1989, the court cannot place the child in care as part of the wardship - so I imagine it’s specifically used for situations including where foreign travel and losing sight of a vulnerable child is a risk. It seems to be something which only comes in when other court orders don’t fit.
I’d imagine a grandparent who’s heard on the grapevine their adult child is thinking of disappearing abroad with their child and is also aware of potential domestic abuse as well as previous Social services concerns, possible concerns about that adult child and has knowledge of a dangerous background in the partner would panic and start looking into what they could do (including seeking legal advice if possible). It’s more about eliminating severe risk than trying to split families up/be involved with the children (which, in relation to not seeking contact with the children, they may have had somewhat valid reasons for, we just don’t know).
Children’s Act 1989 - Wardships