Summary
Oldbury-on-Severn sits on the middle reaches of the Severn Estuary in Gloucestershire, backed by floodbanks and the decommissioned power station. It’s a classic big-tide estuary mark that rewards prepared anglers with codling in winter, bass and smoothhounds in summer, and thornback rays on the right tides. Expect coloured water, brutal currents, and hard-fighting fish close to the wall.
Location and Access
This mark is reached via Oldbury-on-Severn village, near Thornbury, with fishing along the estuary-facing floodbank around the old power station. Access is straightforward on the Severn Way path, but parking is limited and you must keep to public rights of way and respect security fencing around the power station compound.
- From the M5/Thornbury area, follow signs to Oldbury-on-Severn; street parking in the village is limited—park considerately and avoid blocking lanes or farm access (The Anchor Inn area is a common reference point, BS35 postcode district).
- Walk the floodbank path (Severn Way) to the foreshore marks around the power station sea wall and rock armour; allow 10–25 minutes on mostly flat ground.
- Do not enter the power station site or climb any structures—fish only from public paths/foreshore where permitted.
- Terrain is floodbank grass, concrete sections, and rough rock armour in places; a trolley helps with heavier gear.
- At lower states of tide the foreshore is soft mud: remain on firm ground or the wall.
Seasons
This is a seasonal estuary venue with strong migrations and brackish influence. Fish move on the tide; many are tight in at peak flow.
- Winter (Nov–Feb):
- Codling (main target after blows and on coloured water)
- Flounder
- Occasional whiting on colder snaps
- Spring (Mar–May):
- Thornback ray (building through spring)
- Early bass on milder spells
- Silver eel (return all by law)
- Summer (Jun–Aug):
- Bass (schoolies to better fish on springs)
- Smoothhound (peeler crab bites, evenings into dark)
- Thornback ray
- Eels and occasional flounder
- Autumn (Sep–Oct):
- Bass peak (especially after fresh SW winds)
- Thornback ray
- Codling reappear late September onwards
- Occasional/bycatch:
- Thick-lipped mullet around the pill/outfall areas (delicate tactics)
- Small conger, odd whiting; migratory species like shad or sea trout must be released if encountered.
Methods
Standard estuary bottom tactics dominate due to the huge tide and coloured water. Think strong tackle, grippy leads and chunky fresh baits.
- Rigs:
- Pulley pennel (4/0–5/0) for codling/bass/rays; add a weak-link (rotten bottom) to save rigs in rough patches.
- Up-and-over or pulley dropper for rays when distance and clean presentation matter.
- 2-hook flapper (size 1–1/0) for flounder/eels/whiting on neaps or slack water.
- Leads and line:
- 6–8 oz wired grip leads to hold in the run; carry a range as flow varies rapidly.
- 20–30 lb mono mainline with 60–80 lb shock leader; braid is possible but mono resists abrasion/weed better here.
- Baits:
- Lugworm (black/blow), ragworm, and crab (peeler/hardback) are staples.
- Squid or squid-lug cocktails for codling; mackerel/bluey and squid for rays; fresh peeler for smoothhound and bass.
- Small worm baits with fishy tip for flounder/whiting; bind with bait elastic in strong flow.
- Tactics:
- Cast uptide slightly and walk the line down to set the gripper; keep bow in the line under control.
- Don’t always blast it—on high water many fish patrol close to the wall/rock line.
- Night sessions are very productive, particularly for bass, codling and eel activity.
Tides and Conditions
Oldbury is all about timing the tide and picking sensible springs. The Severn’s tidal range is among the largest in the world, so plan around flow and safety.
- Best tide states:
- Typically 2–3 hours up to high water and the first hour down; many avoid the very biggest springs due to excessive run.
- Mid-range to larger springs for bass, codling and rays; neaps for scratching flounder/whiting and easier presentation.
- Tide references:
- Use Avonmouth tide times as a practical guide for planning; local variations are minor but flow is fierce.
- Conditions:
- Coloured water is normal and good; after SW blows that stir the estuary, codling often show in season.
- A warm, stable spell with some colour favors bass and smoothhounds; peeler availability boosts results.
- Night into first light commonly outfishes daylight, especially on clear, still nights.
- Seasonal notes:
- Spring to early summer sees thornbacks; late spring into summer brings smoothhounds on crab.
- Autumn gales and dropping temperatures draw codling into reachable gutters.
Safety
This is a serious estuary with fast-flooding tides, soft mud and debris. Treat it with the same respect you would a surf beach with heavy undertow.
- Never step onto the mudflats at low water—fish from firm ground, the wall, or designated access points only.
- Strong currents and tidal surges can lift large debris (logs, weed); keep lines high and stay alert.
- Wear a proper PFD/lifejacket, especially after dark or in rough weather; use headlamps and carry a backup light.
- Rock armour is uneven and slippery; cleated boots and a long-handled gaff/net help with safe landing.
- Avoid the very top of spring tides in onshore blows when overtopping can occur along sections of wall.
- Respect all security fencing and signage around the power station; no access onto structures or the compound.
- Accessibility: the floodbank path is generally level but involves gates/stiles and uneven surfaces—unsuitable for most wheelchairs; a gear trolley is viable in dry conditions.
Facilities
Facilities are limited at the mark itself; plan to be self-sufficient. The nearest services are in Oldbury-on-Severn and Thornbury.
- On-site: no toilets, water or shelter; mobile signal can be patchy in places but generally workable on higher ground.
- Village: a pub (check opening hours) and limited parking; please be considerate to residents.
- Nearby towns: Thornbury and Berkeley for shops, fuel, food and potential tackle supplies; larger stores in Bristol.
- No dedicated cleaning or fish preparation areas—take all litter and line home.
Tips
Local tides and ground changes with storms; keep mobile and read the water. Regulars time short, focused sessions around the best hour rather than sitting all day.
- Bring more grip leads than you think you’ll need; weak-link setups save a fortune in lost gear.
- Big baits, big fish: whole squid or crab wraps presented close to the wall at top water often out-fish long casts.
- In summer, crabs strip baits fast—use elastic and rebait often, or fish tougher cocktails (squid-lug).
- After heavy rain upstream, salinity drops and debris increases; switch to scent-heavy baits and expect the best action as the colour settles.
- The old power station outfall area still scours features even post-decommissioning; treat it as a holding zone, but do not trespass on any structure.
- Keep low noise and lights dim—bass patrol tight under the bank on calm nights.
Regulations
This stretch lies within the Severn Estuary’s protected designations (SSSI/SPA/SAC) and near critical infrastructure. Know the rules before you go and always check for updated local signage.
- Access: public rights of way only; no fishing from or within the power station compound/structures. Obey all security notices.
- Conservation areas: parts of the foreshore and saltmarsh are protected—avoid trampling sensitive habitats and roosting birds; bait digging may be restricted in places.
- Rod licence: no Environment Agency rod licence is needed to fish for sea fish in tidal waters; a licence is required if targeting salmon, sea trout or trout. Do not intentionally target migratory species in the estuary.
- Eels and shad: European eel must be released; shad (twaite/allis) and other migratory species must be returned immediately if accidentally caught.
- Size and bag limits: observe UK minimum conservation reference sizes; keep only legal-sized fish. Check current rules for bass and other species.
- Bass (check current year before fishing): as of 2024, recreational retention is closed Dec–Feb, with a 2 fish/day bag at 42 cm min from Mar–Nov; rules can change annually.
- Litter and biosecurity: remove all tackle waste; rinse waders/gear to prevent spreading invasive species.
- Night fishing: permitted where access is legal; carry ID and be prepared to show tackle to security or enforcement if asked.