Grandchildren have been taken in to care

[PGGYFW3]

My 4 Gran kids have been put in foster care under a section 20. Currently Children Services are saying it be in court with the next 3 weeks.

The reasons were home conditions, both parents have failed drugs tests and my Son’s partners Mother has made an allegation of domestic abuse. The domestic abuse is unfounded and the police said it will go NFA. There is literally no evidence.

The kids are 8,5 and 2 year old twins.
Before the section 20 I had the 2 eldest kids almost every weekend and 3-4 days a week during school holidays.

The social worker is being very dismissive with me being a Grandparent and while I attended the contact centre with my Son twice a week for a hour. Now she is saying I can only attend 1 session every 2 weeks.

I did apply for an emergency SGO assessment for the 2 eldest but I failed it due to they said with me working and some nights per month no plan was made where they would be staying, everything else was positive due it was like a second home them. They have everything in place for when they stayed, clothes, toys, bikes etc and their own room.

Obviously I am worried of the very close bond I have with them, even the foster carer has said it’s Grandad this Grandad that from the eldest ones.

I am not really clued up on family law and can’t really afford to start paying solicitors to get involved if it’s possible for me to even apply for any court orders ie arrangement orders etc.

Any advice where to start or what route to go down would be grateful