Hi Sue. suggest you google www.directgov and put adoption contact register in search on their website and then click on 'using the adoption contact register'. You can register on this government site and then if your daughter is looking for you and registers on this site she will know you wish to contact.

Your school friend might be traced on Friends Reunited or similar site.

Old flames are probably burnt out by now and perhaps best remembered as they were in their youth.

I wish you well.