Information from Fair Play for Women Twitter:
For a Scottish GRC to be recognised outside of Scotland the UK Government will have to agree.
Scottish GRA reform is lowering the age to 16. This means that for the first time ever, English and Welsh schools may have to deal with teenage boys presenting their newly acquired female birth certificates to staff and demanding access to the girl's changing rooms and sports. This means that if you have daughters their rights to privacy away from the opposite sex while at school in England and Wales will be diminished by a decision in the Scottish Parliament made by MSPs you didn't vote for.
Scottish Self-ID will be open to anyone living in Scotland including those who chose to attend one of the fifteen universities in Scotland. This could mean that any child could start a university in Scotland in the Autumn and by Easter come home with a new birth certificate.
Trans groups including Stonewall know Scottish reforms will reach across the UK and are pushing to make it happen. Talks between the Scottish Government and the UK Government have already started.
Liz Truss rejected self ID saying proper 'checks and balances' are needed. Nothing has changed so if you have any concerns about this situation tell her, Nadhim Zahawi and/or your local MP. You can also highlight your concerns to the Scottish government via a short survey (closing date 17th May).
This plus further information can be found on Twitter although I guess it is also available on their website.