A useful link relating to Equilibrium Prices – https://news.sky.com/story/why-they-are-raisin-the-price-of-hot-cross-buns-this-easter-11268422
See below where to find the relevant area of the specification for A Level Economics, Edexcel, AQA & OCR:-
Edexcel spec reference 1.2.6 – Equilibrium price and quantity and how they are determined
AQA spec reference – The determination of equilibrium market prices
OCR spec reference P8  – Explain, with the aid of a diagram, how demand and supply interact to produce market equilibrium in product markets