Before the Town Wakes

Arrive before seven if you can. A canal basin at that hour belongs to the herons and the moorhens, and the water still holds the night's cold so the mist sits on it in flat sheets. There is usually a small gravel lay-by behind the wharf, free and empty at this time, though it fills by ten on a sunny Saturday. Park facing outwards — you will thank yourself when you leave.

Wear boots rather than trainers. The towpath is compacted grit in places and slick clay in others, and the dew sits heavy on the grass verges until mid-morning. Bring a flask, a torch for the darker tunnel of trees at the far end of the basin, and a bag for the wild garlic you will inevitably come home with.

• Best months: April to June for green growth and wild garlic; October for mist and low light.
• Best time: first light to about half eight, before the dog walkers and the first lock movement.
• Allow: ninety minutes without stopping, or half a day if you sit down twice.

The Towpath, Step by Step

Start where the towpath leaves the lane and follow the water away from the town, not towards it. You will pass a row of narrowboats moored stern-to, most of them lived in: a whiff of coal smoke, a bicycle chained to a roof, painted roses and castles on a water can left out to catch the rain. Walk quietly and don't peer through windows, tempting as the glow of a lit stove is at seven in the morning.

The path narrows after the third boat, then opens out where the basin widens. This is the stretch worth slowing down for. The edge is soft here, so keep a metre back from the water; the bank has been undermined in places and the grass gives no warning. Look across rather than down. The far side shows the basin as it was built — a long, low wall of brick with stone coping, bowing very slightly where two hundred years of water has pressed against it.

Brick Warehouses and the Shape of Old Trade

The warehouses are the reason the basin exists. Two and three storeys of hand-made brick, arched doorways at ground level so casks and sacks could be rolled straight from a boat's deck, and small square windows high up where the clerks worked and could watch the wharf. Look for the iron rings bolted into the walls, worn thin and shiny by ropes, and the stub of a crane jib still fixed above one arch. Some buildings carry a date picked out in lighter brick near the gable.

Many have been quietly converted — a workshop, a small studio, one with a balcony bolted onto the waterside — but the bones are all still there. Walk the length of them once, then come back and walk it again looking only upwards. The rooflines tell you which building was the bonded store and which was the tally office.

Herons, Wild Garlic and Other Small Rewards

The heron is almost guaranteed. It will be standing on the far bank like a folded umbrella, absolutely still, and it will lift off with that grumpy, prehistoric croak the moment you get within thirty paces. A kingfisher is possible but never promised — a blue flicker low over the water, gone before you have properly focused. Coots arguing, a moorhen picking along the mud, the occasional flash of a grey wagtail on the lock sill.

Wild garlic carpets the shaded bank from mid-April, and the smell arrives before the sight of it. Pick responsibly:

• Take leaves only, one from each clump, never the bulb.
• Avoid plants within a couple of metres of the path — dogs and their owners use the verge.
• Rinse everything at home and use it within a day or two, or blitz it into butter and freeze it.

Further along there is nettle, cow parsley and, later in the year, teasel standing brown and spiky above the hedge. Nothing here is a formal nature reserve; it is just a working edge that has been left alone long enough to become rich.

Lock Gates and the Rhythm of the Water

At the far end of the basin the water drops through a single lock, and this is the quietest corner of the whole walk. The gates are oak, blackened and split along the grain, with balance beams worn smooth and pale by hands. Moss and pennywort cling to the paddle gear; the iron is pitted but still turns. Stand on the bridge above and listen — water seeping through the mitre, a drip echoing under the arch, the hollow clunk of a boat's hull somewhere out of sight.

Don't climb on the gates or walk the beam. They are heavier and more slippery than they look, and a canal lock is genuinely dangerous if you treat it as playground equipment. Watch from the bridge or the towpath and let the place do the work.

A Cosy Base for the Night

If you want to make a proper stay of it, the basin rewards an overnight. The best options are the ones that lean into the setting rather than ignore it: a converted lock-keeper's cottage with a woodburner and a long, low window facing the water, or a village pub ten minutes' walk away with three or four rooms above the bar and a proper cooked breakfast.

• Ask specifically for a canal-facing room — the road side is often noisier than the map suggests.
• Book direct and ask about early breakfast; most kitchens will do you something at half seven if you mention the walk.
• Take a small torch for the unlit stretch back from the pub after dark.
• In winter, check the fire is actually lit before you book. A woodburner is the whole point.

Come in autumn for the best of it: mist on the water at dawn, the smell of leaf mould, and the first stoves smoking on the moored boats. One slow circuit, a flask, and a warm room waiting — that is the entire itinerary, and it is quite enough.