Almost definitely allowed, but for a definitive answer you will need to check each specific exam/board e.g.
e.g. OCR Physics - Learners are permitted to use a scientific or graphical calculator for components 01, 02 and 03. Calculators are subject to the rules in the document Instructions for Conducting Examinations published annually by JCQ (www.jcq.org.uk).
Almost definitely allowed, but for a definitive answer you will need to check each specific exam/board e.g.
e.g. OCR Physics - Learners are permitted to use a scientific or graphical calculator for components 01, 02 and 03. Calculators are subject to the rules in the document Instructions for Conducting Examinations published annually by JCQ (www.jcq.org.uk).