Mackerel (Scomber scombrus) are probably the most caught fish in the British Isles by sheer number. Hundreds of thousands of recreational anglers, from children with handlines to experienced sea fishers, catch mackerel every summer from piers, headlands, and boats around the UK coast. They arrive in vast shoals, they feed with abandon, and they fight hard for their size. As an introduction to sea fishing they are almost without equal.
Mackerel are also outstanding eating – fresh mackerel caught and eaten the same day is one of the finest fish Britain’s coastline produces. Their reputation as a bait fish for larger species (bass, conger, tope, sharks) is also significant. Most serious sea anglers keep a quantity of mackerel as fresh bait alongside whatever they are primarily targeting.
Identification
Mackerel are unmistakable. No UK sea fish looks remotely similar.
Coloration: The back is brilliant iridescent blue-green with a distinctive pattern of wavy, irregularly undulating black or dark blue lines running from head to tail. The flanks fade from greenish to silver; the belly is bright, unmarked silver-white. The iridescent pattern shifts with the angle of light.
Body: Streamlined and fusiform – a very narrow waist (caudal peduncle) just before the tail fin. The body is clearly built for high-speed swimming. Small finlets (5 dorsal and 5 anal) run between the rear of the dorsal and anal fins and the tail.
Tail: Strongly forked, the classic tuna-family tail design for high-efficiency continuous swimming.
Fins: Two dorsal fins widely separated. First dorsal with 9-13 spines; second dorsal much smaller with a soft ray followed by the finlets.
Size: Most mackerel caught from shore are 25-40cm and 0.5-1lb. Large specimens (over 42cm and 2lb) are called “joey” mackerel in angling slang, or simply large mackerel. The British rod-caught record stands at 6lb 0oz 4dr, caught from a Welsh mark.
Distribution
Mackerel are highly migratory and are found throughout the North Atlantic. Around the UK:
- Present on virtually all UK coastlines during summer (May to October)
- Concentrations on the south-west (Cornwall, Devon) from late April
- North Sea populations present from June through September
- Scottish coasts hold mackerel from July into October
- The western coast of Ireland is one of the most prolific mackerel grounds in Europe
In winter, mackerel move offshore to deeper Atlantic water (100-200m+) where they largely stop feeding and live off fat reserves. Inshore mackerel populations follow the movements of baitfish (small sprats, sand eels, whitebait) which they feed on.
Habitat
Mackerel are pelagic, open-water fish. Unlike bass, they do not use reef structure as ambush points. They travel in massive, tight shoals that cover open water in pursuit of baitfish. Where baitfish are, mackerel are.
Key inshore mackerel locations:
Headlands and promontories. Tide races and rips around headlands concentrate baitfish and attract mackerel. A flowing tide past a point of land creates current structure that baitfish must navigate; mackerel wait at the downtide end to intercept prey.
Piers and breakwaters. Mackerel shoals follow baitfish into harbours and around pier structures. They are the most reliably caught fish from virtually every UK pier in summer. Any pier with clear water below it should hold mackerel from June to September.
Tide races. Where tidal streams run fast and turbulent between headlands or around islands (Portland Bill, Land’s End, the Pentland Firth), mackerel are present in significant numbers during summer.
Surface water. Unlike bottom-feeding fish, mackerel are visible on the surface when feeding. Frenzied surface activity – birds diving, whitebait leaping, oil slick on the surface from crushed baitfish – indicates a feeding shoal of mackerel below. These visible “boils” are the most reliably productive mackerel fishing.
Seasonal Behaviour
Spring (April to June): Mackerel begin appearing inshore on the south-west coast in late April, with good numbers establishing by mid-May in most years. By June, mackerel are present around most of England and Wales south of Yorkshire.
Summer (June to August): Peak season. Dense inshore shoals on the south-west. Mackerel are catchable throughout the day from most UK piers and headlands. The largest mackerel of the year appear in July and August.
Autumn (September to October): Mackerel remain in UK inshore waters into October, often moving north as southern inshore temperatures drop. Autumn mackerel from the south-west on feathers or spinners can be larger than summer fish.
Winter (November to March): Mackerel are not present in UK inshore waters in winter. Occasionally taken by boat anglers over deep offshore grounds in November on the south-west, but shore mackerel fishing is effectively over by November.
Methods
Mackerel Feathers
The standard mackerel method. A set of mackerel feathers (typically 6 hooks on a trace, each decorated with white feather, tinsel, or luminous tubing) is tied to a 2-3oz lead at the bottom and cast from pier, headland, or boat. The lead sinks and the feathers flutter through the water column. A steady retrieve produces most of the takes; a jig-and-pause retrieve is more selective for larger fish.
Retrieve at different depths until takes are consistent – mackerel can be anywhere from the surface to near the bottom depending on where the baitfish are.
Feathers from the pier side: cast, count down to the desired depth (1 second per 30cm approximately), then retrieve steadily. On the right day, multiple mackerel can be taken on every cast.
Spinners and Lures
Small spinners (size 0-2) in silver or chrome produce mackerel well when retrieved fast through feeding fish. The rapid spin and flash imitates the movement of a sand eel or small sprat. A size 0 Mepps or similar in silver is one of the most reliable mackerel lures.
Small metal wedges (Dexter Wedge, German Sprat) cast from headlands and retrieved at pace produce mackerel at range.
On a fly rod with a fast-sink shooting head and a small streamer or bucktail fly, mackerel provide exceptional sport in clear water. This is an underrated approach but well-established among enthusiastic sea fly fishers.
Handlining
The simplest mackerel method. A line of 20-30lb, a set of feathers, and 2-3oz of lead can be handlined from rocks, a pier, or a kayak without a rod. Large quantities of mackerel can be taken this way for bait use. Not recommended for sport fishing as the fight is lost without rod cushioning.
Bait Fishing for Mackerel
A small strip of fresh mackerel skin with the scales on, or half a small sand eel on a size 2 hook, fished below a float on a light spinning rod, can produce mackerel selectively in situations where feathers are producing small fish and the larger specimens are being more cautious. Large mackerel are notably warier than small schooling fish.
Mackerel as Bait
Fresh mackerel is among the most effective sea baits available:
Whole mackerel or half mackerel: Bass, tope, conger, skate, and shark will all take a fresh half mackerel on a suitable hook. Kept whole and hooked through the head on a running trace, mackerel is a primary bait for large bass from rocky headlands at night.
Mackerel fillet: A fresh fillet on a running leger or flowing trace is effective for bass and rays. Cut a tapered 3-inch strip (tail end) for a lively, waving presentation.
Mackerel belly strip: The white, soft belly skin cut in a thin tapering strip is a standard sea fishing hookbait for a range of species on feathers and running traces.
Mackerel head: The head and collar of a mackerel on a large hook is a top conger eel bait on reef ground.
Fresh is critical. A mackerel kept on ice and used the same day it was caught is far more effective than frozen mackerel from a bait supplier, which tends to go soft on the hook quickly.
Eating Mackerel
Mackerel are perishable – the high oil content that makes them such a prized eating fish also makes them deteriorate quickly. Gut mackerel immediately on catching and keep them in ice or cold water. A mackerel left ungutted in the sun for two hours is fit for bait but not for the table.
Mackerel kept properly on ice are outstanding eating: grilled whole, filleted and pan-fried, smoked, or cooked fresh over a beach fire. They need minimal preparation and maximum freshness.
Conservation
UK mackerel stocks are managed under EU and post-Brexit UK fishing quota agreements. The commercial mackerel fishery in UK waters is one of the largest in Europe by volume.
For recreational anglers, mackerel are not subject to bag limits in UK waters (as of the time of writing – verify current rules with the MMO). The practice of only taking what you will eat (and returning the rest) is standard good practice, particularly for piers and popular marks where the volume of recreational catch is high.
Frequently Asked Questions
When do mackerel arrive in UK waters?
Mackerel typically begin appearing inshore on the south-west coast in late April, with good numbers by mid-May. By June they are present around most English and Welsh coasts. They are usually gone from inshore marks by November. The Clyde (Scotland) and Irish south coast hold mackerel into October.
What rod and line for mackerel?
A 9-12ft beach rod or a 6-8ft spinning rod with 10-15lb monofilament or 20lb braid on a 4000-6000 size reel. Tie on a set of mackerel feathers with a 2-3oz lead, and you are fishing. A lighter spinning rod with 12lb line and small metal lures is the most sporting mackerel approach.
How many mackerel can you keep?
There is no current statutory limit on mackerel retained by recreational anglers in English waters (verify current MMO rules). Good practice is to only keep what you intend to eat or use fresh as bait. Mackerel are not suited to freezing for long periods as the flesh deteriorates quickly.
Are mackerel good to eat?
Yes. Fresh mackerel caught and eaten the same day is outstanding – oily, flavourful, and nutritious. It is one of the finest fish the UK coast produces. The key is freshness: gut them immediately and keep them cold.
What depth do mackerel swim at?
Mackerel can be anywhere in the water column from the surface to 50m+, following baitfish. On most inshore fishing, the top 5-10m is most productive when mackerel are actively feeding in summer. Count your feathers down at different depths until you find them – if you get no takes in the top third of the water column, try deeper.