Touring park · St Just in Roseland · Cornwall

Trethem Mill Touring Park

Adults-only, five-star touring park near St Mawes on the Roseland, with hedged electric pitches and a flat £39 nightly rate for two.

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Dogs welcome
Adults only

Trethem Mill is a family-run touring park down a single-track lane off the A3078 on the Roseland Peninsula, a few minutes from St Mawes. It takes adults only, 18 and over, including day visitors, and keeps the mood quiet: no gazebos, no generators, no group gatherings, noise kept low and all quiet from 10.30pm. Pitches are individually hedged, every one has 16-amp electric, a TV point and a picnic table, and most guests are in caravans, motorhomes or tents with a car.

There are three pitch types. Grass pitches are on a gentle slope for drainage and are for tents only. All-weather pitches have a gravel base and also work for tents with a thicker groundsheet. Fully serviced pitches add water and drainage to the gravel. Two people are included in the price; extra adults, a second car and a pup tent are small add-ons.

The central block has individual unisex shower rooms with underfloor heating, a coin laundrette, an indoor washing-up room, a small shop with wine, beer and basics, four EV chargers and a motorhome service point. Dogs are welcome on a short lead and can run in a separate three-acre field. Free WiFi covers the park; EE mobile signal is good but other networks are patchy. The park is closed for 2026 and reopens 1 May 2027.

Adults only, with a five-star VisitEngland rating
Every pitch hedged with 16-amp electric, TV point and picnic table
Three-acre off-lead dog field
Near St Mawes on the Roseland Peninsula
Four EV charging points and a motorhome service point

Photos

Photos from trethem.com, the campsite's own website. Own this campsite? Claim it to choose your photos.

Open1 May to 1 October

Arrive / leaveFrom 13:00 / by 11:00

DogsYes

CampfiresNo

PoolNone

ElectricYes

Prices

One flat rate for the whole season. The nightly charge covers 1 or 2 people plus caravan/awning/car, motorhome/awning/car, or tent/car. Extra adults are 18+ and only at management discretion (up to 2 extra per pitch).

When is it cheapest?

One night for two adults in the all-weather pitch, every night of the next year. Tap a day to price it.

CheapestDearestClosed

October 2026 from £39

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November 2026

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December 2026

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January 2027

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February 2027

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March 2027

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April 2027

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May 2027 from £39

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June 2027 from £39

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July 2027 from £39

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August 2027 from £39

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September 2027 from £39

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The full price list we hold (2027)

Seasons

Open season: 1 May to 1 October

Rates

For	Season	Nights	Price
all-weather, grass	season	Any	£39 pitch_night, incl. 2 adults
fully-serviced	season	Any	£44 pitch_night, incl. 2 adults

People

Adult 18: £10 night

Extras

Dog: £1 night
Extra car: £5 night (Only on certain pitches, state at booking)
Pup tent: £3 night (Small utility tent, only on certain pitches, state at booking)

Deposit: £50 non-refundable deposit per pitch per holiday (or full fee if less); balance due 28 days before arrival

Source: trethem.com, checked 2026-10-20. Always confirm the price when you book.

Places to stay

Fully serviced pitch

Pitch · sleeps 2

Gravel
Electric 16A
Water
Waste drain
For caravan, motorhome, campervan, tent

Granite chipping base; whole unit including awning must fit on the base. Picnic table. Tents need a thicker groundsheet.

All-weather pitch

Pitch · sleeps 2

Gravel
Electric 16A
For caravan, motorhome, campervan, tent

Granite chipping base; whole unit including awning must fit on the base. Picnic table. Tents need a thicker groundsheet.

Grass pitch

Pitch · sleeps 2

Grass
Electric 16A
For tent

Gentle slope for drainage; tents only. Picnic table.

Rules

Dogs: Yes · £1 night · on leads
Tethered on a short lead at all times; only exercised in the designated dog field; never left unattended; not allowed in park buildings (assistance dogs excepted)
Separate three-acre field for off-lead exercise.
Fires: No
BBQs: Raised off the ground only
BBQs and hot pans must be raised off the grass (blocks available). No open fires or burning wood.
Pool: None
Groups: No
No group bookings or bookings that would form a group gathering.
Ages: Adults only
Quiet hours: 22:30 – 08:00
Arrival: From 13:00 until 18:00
No waiting area for early or late arrivals because of the narrow lane
Vehicles: Car by your pitch · 1 per pitch
Music: TVs, music and all noise kept low at all times
Visitors: Day visitors must be 18+ and leave by 10pm
Cancellation: Cancel 28 or more days ahead and lose only the £50 deposit; inside 28 days no refund. Written notice only. Dates change before full payment cost £5.
Also: Over-18s only, including day visitors.
Also: No gazebos, day tents or shelters; no flags, windsocks or illuminated poles.
Also: No EV charging on pitches; use the four 7.2kW points (Monta app).
Also: Up to 2 people per pitch; 1-2 extra only at management discretion.
Also: Bookings not taken by phone, via the online form.

Facilities

Washing and toilets

Toilets
Hot water
Accessible shower
Laundry
Washing-up area

Pitches and power

Electric hook-up
Hardstanding pitches
Drinking water
Grey waste
Motorhome service point
EV charging
WiFi (Free)
Mobile signal (Patchy)

Food and drink

Shop

Things to do

Dog walk

Around the site

Only facilities we've confirmed are shown. Crossed out means confirmed not available.

Location

Trethem Mill Touring Park, St Just in Roseland, Truro, St Just in Roseland, TR2 5JF

Nearest beachPorthcurnick35 min walk
Nearest pubThe Standard Inn30 min walk
Nearest ferryTrelissick Pontoon2.1 miles
Nearest stationFalmouth Docks3.6 miles

Directions in Google Maps

Questions people ask

Are dogs allowed at Trethem Mill Touring Park?

Yes, dogs are welcome. They cost £1 a night. Tethered on a short lead at all times; only exercised in the designated dog field; never left unattended; not allowed in park buildings (assistance dogs excepted).

Can you have a campfire at Trethem Mill Touring Park?

No, campfires aren't allowed. BBQs: raised off the ground only.

When is Trethem Mill Touring Park open?

1 May to 1 October.

How much does it cost to stay at Trethem Mill Touring Park?

From £39 a night for two adults, the lowest price we can find over the next year. One flat rate for the whole season. The nightly charge covers 1 or 2 people plus caravan/awning/car, motorhome/awning/car, or tent/car. Extra adults are 18+ and only at management discretion (up to 2 extra per pitch).

Does Trethem Mill Touring Park have a swimming pool?

No.

Does Trethem Mill Touring Park have electric hook-ups?

Yes.

Is there WiFi at Trethem Mill Touring Park?

Free.

How far is Trethem Mill Touring Park from the beach?

Porthcurnick is 1.3 miles away (as the crow flies).

Which ferry is closest to Trethem Mill Touring Park?

Trelissick Pontoon, 2.1 miles away.

Is Trethem Mill Touring Park adults only?

Yes.