202, E211, E219), colouring (E160a), vitamin B1. Full Review: Glucose gel for fast energy release. Very acceptable, with a genuinely convenient re-sealable top. Eye-wateringly sweet, as you'd expect from glucose syrup. Nonetheless, not hard to swallow

100g): 286kcal Carbohydrate (per 100g): 71g Typical Ingredients: Enzymatic hydrolysate of maize (maltodextrin), water, fructose, sodium chloride, preservative, flavour, vitamin B1. Full Review: The first energy gel to hit the UK shores. Contains high

Bar electrolyte blend (sodium chloride, sodium citrate, potassium chloride), natural flavour, citric acid, sodium benzoate, potassium sorbate. Full Review: More of a paste than a gel. Contains a mix of fast- and sustained-release carbohydrates (80

citrate), Preservative (potassium sorbate), flavouring, stabiliser (acacia gum), colour (beta carotene). Full Review: Concentrated energy gel with 23g of carbohydrate. a.k.a "billy": QUICK WORKING ENERGY ON THE RUN Strengths: taste is sweet, but not sickly

, sweetener: acesulfame k, preservative: potassium sorbate and sodium benzoate, sodium chloride, riboflavin. Full Review: An isotonic gel with mild flavours. The use of maltodextrins and gelling agents mean this is a sustained-release energy gel. They are easy

Carbohydrate (per 100g): 68.2g Typical Ingredients: Glucose Syrup (89%w/w), water, citric acid, acidity regulator (sodium citrate), Preservative (potassium sorbate), flavouring, stabiliser (acacia gum), colour (betacarotene). Full Review: Orange-flavoured gel