Joybuy Insights

Our Top Recommendations for Frozen King Prawns in the UK for 2026

By Joybuy

Updated June 2026

5 Min Read

Frozen king prawns are a staple in many UK kitchens, offering a quick and delicious way to add high-quality protein to any meal. Yet, when you decide to buy prawns online, the sheer variety can be overwhelming. Should you choose raw king prawns or cooked king prawns? Are peeled prawns better than shell on prawns?

Navigating these options to find the right product for your dish, whether it's a speedy weeknight stir-fry or an impressive weekend paella, can be a challenge. This guide is designed to simplify your choice, providing clear, practical information to help you select the ideal frozen king prawns for your culinary needs.

A Practical Guide to Buying Frozen King Prawns

Understanding a few key distinctions can make all the difference when selecting prawns. Here are some points to consider before adding a pack to your basket.

1. Raw vs. Cooked: Which is Right for Your Dish?

The first major choice is between raw and pre-cooked prawns.

• Raw King Prawns: These are greyish and translucent in their frozen state. They offer the most culinary flexibility, as you have complete control over the cooking process and final texture. They absorb flavours beautifully, making them the preferred choice for dishes like curries, garlic prawns or prawns for pasta, where they are cooked as part of the recipe.
• Cooked King Prawns: Also known as ready to eat prawns, these are pink and opaque. They have been cooked before being frozen, meaning they only need to be thawed before serving. This makes them exceptionally convenient for cold dishes like prawn cocktails, salads and sandwiches. While you can gently warm them, be careful not to overcook them, as they can become rubbery.

2. Peeled vs. Shell-On: Convenience vs. Flavour

Your next consideration is whether to opt for prawns with or without their shells.

• Peeled Prawns: These prawns have had the shell (and often the digestive tract, or 'vein') removed. This saves a significant amount of preparation time, allowing you to add them directly to your pan. They are an excellent choice for quick, hassle-free meals.
• Shell On Prawns: Leaving the shell on during cooking can protect the delicate meat, keeping it more succulent and imparting a deeper, richer seafood flavour. The shells can also be used to create a wonderfully flavourful stock for soups or risottos. This option, particularly for jumbo king prawns, is often favoured for barbecuing or for dishes where presentation is key.

3. Understanding Sizing and Net Weight

You may see numbers like 31/40 on packaging. This is a standard sizing guide indicating the approximate number of prawns per pound. A lower number means larger prawns. It's also important to check the net weight. A bag of king prawns 1kg may have a net drained weight of 700g, for example. This is because a protective glaze of ice is often added to prevent freezer burn and the net weight tells you the actual weight of the prawns themselves.

Our Top Recommendations for Frozen King Prawns in 2026

Based on convenience, quality and culinary application, here are our recommendations to help you find the right prawns for your next meal.

For Ultimate Weeknight Convenience: Arctic Royal Raw Peeled & Deveined King Prawns

Why It Stands Out: These prawns are designed for maximum ease. They arrive raw, but fully peeled and deveined, removing all the prep work. Because they are Individually Quick Frozen (IQF), they don't clump together, so you can take out exactly the portion you need. Best of all, they can be cooked directly from frozen in just a few minutes.

Pros:

• No thawing, peeling or deveining required.
• Cooks in 3-4 minutes from frozen.
• Large 1kg bag (700g net weight) offers great value for stocking the freezer.
• Versatile for stir-fries, curries and pasta dishes.

Who is it for? Busy individuals and families who want a high-protein meal on the table fast without compromising on quality.

For a Touch of Gourmet: Morrisons The Best Raw Jumbo King Prawns

Why It Stands Out: When you want to make an impression, these jumbo king prawns deliver. Presented raw and shell on, they are selected for their impressive size and firm texture. Cooking them from raw with the shell on locks in moisture and provides a depth of flavour that is hard to match, making them perfect for a special occasion.

Pros:

• Generous jumbo size for a meaty, satisfying bite.
• Shell-on preparation enhances flavour and succulence.
• Raw format allows for complete control over seasoning and cooking.
• Ideal for grilling, pan-searing or as the centrepiece of a paella.

Who is it for? Home cooks who enjoy the process of creating a special meal from scratch and appreciate the superior flavour and texture of high-quality ingredients.

For Effortless Salads and Starters: Morrisons Ready Cooked King Prawns

Why It Stands Out: These prawns are the definition of simple. As cooked king prawns, they are ready to use as soon as they are thawed. There is no cooking required, making them an invaluable ingredient for quick lunches, appetisers and light dinners. They bring a fresh, delicate seafood flavour to any dish with zero fuss.

Pros:

• Fully cooked for immediate use in cold dishes.
• Requires only thawing—no cooking needed.
• Perfect for classic prawn cocktails, salads and sandwiches.
• A simple way to add lean protein to meals.

Who is it for? Anyone looking for a quick and healthy food option, from those preparing packed lunches to hosts needing an easy appetiser.

Looking for More Options?

If you're searching for a different size, preparation style or pack quantity, there are many other choices available. To see a broader selection that includes everything from small salad prawns to extra-large tiger prawns, feel free to browse our full collection.

Explore our complete range of king prawn products to find your perfect match.

Frequently Asked Questions

1. Can you cook frozen king prawns without defrosting? Yes, in many cases you can, especially with smaller, peeled prawns. Stir-frying or boiling from frozen is often recommended as it can prevent them from overcooking. For larger, shell-on prawns, thawing them first generally results in more even cooking. Always refer to the instructions on the packaging for the best guidance.

2. What is the best way to thaw frozen prawns? The recommended method is to place the frozen prawns in a sieve or colander over a bowl and leave them in the refrigerator for several hours or overnight. For a faster method, place them in a sealed bag and submerge it in a bowl of cold water for 20-30 minutes, changing the water once. Avoid using warm water or a microwave, as this can negatively affect their texture.

3. How do I know when my prawns are cooked? Raw prawns are typically grey and somewhat translucent. As they cook, they will turn pink and become completely opaque. A perfectly cooked prawn will curl into a loose 'C' shape. If it curls into a tight 'O', it is likely overcooked and may be tough.