None because GCSEs do not give you UCAS points. Only AS and A Levels and their equivalents (eg. BTECs) give you UCAS points
You can do retakes of exams to get better grades and therefore get a higher number of UCAS points. Or you can take on some extra subjects to get UCAS points from them too.
A GCE A Level at Grade B is worth 100 UCAS points
They are worth the same amount of UCAS points. If you are planning to study a mathematics related degree at university, then further maths will give you a bit of a head start.
LAMDA only accept applications made straight to them, they don't use UCAS.
No
I believe it's a key skills qualification. According to this calculator, a Key Skills qualification at level 2 is worth 10 UCAS points. http://www.merlinhelpsstudents.com/studentlife/beforeuniversity/ucas/ucaspointscalculator.asp
You will be able to gain UCAS points through extra curricular activites by contacting your academic advisor. They can provide details on the actual process and how many points can be achieved.
UCAS points are not typically awarded for VRQ qualifications. UCAS points are usually associated with academic qualifications like A-levels, BTECs, and the International Baccalaureate. VRQ qualifications are vocational qualifications that focus on practical skills and knowledge related to specific industries or job roles.
Between A-level and BTECH, none is better than the other all fetch the same UCAS points.
A grade A at AS level (if you did not carry on the subject until the end of A2 A Level) is worth 60 points. A grade A from a full A Level is worth 120 points. For the full UCAS tarfiff table, please see the related link.
Generally CCD, but this can be made up in another way, such as AB. For the full UCAS tariff table, please see the related link