Oak Farm Bridge No 81 Macclesfield Canal
Oak Weir Lock No 5 River Medway (non-tidal section)
Oath Flood Gates River Parrett
Oakfield Down Lock No 68 Kennet and Avon Canal
Oblique Bridge No 31
Grand Union Canal (Regent's Canal)
Camley Street
Oakfield Bridge (Aylesbury Ring Road) Grand Union Canal (Grand Junction Canal - Aylesbury Arm)
Ocker Hill Pipe Bridge Birmingham Canal Navigations (Walsall Canal)
Oak Meadow Ford Lock No 16
Trent and Mersey Canal (Caldon Branch - Main Line to Froghall)
Churnet Lock, junction with River Churnet
Ockleston's Wharf Bridgewater Canal (Main Line)
Oddingly Number 1 Bridge No 26 Worcester and Birmingham Canal (King's Norton to Worcester)
Oddingley Number 2 Bridge No 27 Worcester and Birmingham Canal (King's Norton to Worcester)
Oddingly Number 3 Bridge No 28 Worcester and Birmingham Canal (King's Norton to Worcester)
Oddies Swing Bridge No 210 Leeds and Liverpool Canal (Main Line - Wigan to Leeds)
Odiham Castle
Basingstoke Canal
End of Navigation
Odiham Wharf
Basingstoke Canal
Commonly known as Colt Hill
Offenham River Avon - Warwickshire (Upper Avon Navigation)
Offerton Bridge No 24 Worcester and Birmingham Canal (King's Norton to Worcester)
Oddy Staircase Locks Nos 4 and 5 Leeds and Liverpool Canal (Main Line - Wigan to Leeds)
Offord Lock No 10 River Great Ouse (Canalized Section)
Ogley Junction Birmingham Canal Navigations (Wyrley and Essington Canal)
Ogley Winding Hole Birmingham Canal Navigations (Wyrley and Essington Canal)
Old Birmingham Road Aqueduct Worcester and Birmingham Canal (King's Norton to Worcester)
Old Church Road Bridge No 7 Coventry Canal (Main Line - Coventry to Hawkesbury)
Old Check Office Bridge No 199 Trent and Mersey Canal (Main Line - Middlewich to Preston Brook)
Old Bank Bridge No 45 Huddersfield Narrow Canal
Old Ford Locks No 19 Lee and Stort Navigation (River Lee: commercial section)
Old Ford Lower Lock Grand Union Canal (Hertford Union Canal)
Old Ford Middle Lock Grand Union Canal (Hertford Union Canal)
Old Ford Upper Lock Grand Union Canal (Hertford Union Canal)
Old Ford Road Bridge No 54 Grand Union Canal (Regent's Canal)
Old Ford Lock No 8 Grand Union Canal (Regent's Canal)
Old Engine House Arm Junction Oxford Canal (Southern Section)
Old Driving Lane Bridge No 57 Macclesfield Canal
Old Church Street Bridge Rochdale Canal
Old Hemplow Bridge No 33 Grand Union Canal (Leicester Section - Old Grand Union)
Old Leake Bridge Witham Navigable Drains (Hobhole Drain)
Old Linslade Wharf
Grand Union Canal (Grand Junction Canal - Main Line)
Bridge No 110
Old Kingsbury Road Bridge Birmingham Canal Navigations (Birmingham and Fazeley Canal - Main Line)
Old Hill Colliery Bridge Birmingham Canal Navigations (Dudley Canal No 2)
Old Hill Bridge No 107 Staffordshire and Worcestershire Canal (Main Line: Autherley to Great Haywood)
Old Man's Bridge No 38 Shropshire Union Canal (Llangollen Canal - Main Line)
Old Mills Lock Site
River Great Ouse (Canalized Section)
Lock abolished. Wonderful mooring in old Lock Cut
Old Mans Bridge No 28
Trent and Mersey Canal (Main Line - Derwent Mouth to Burton)
Clay Mills Bridge
Old Oak Common Railway Depot Access Bridge No 7BA Grand Union Canal (Paddington Branch)
Old Oak Lane Bridge No 7
Grand Union Canal (Paddington Branch)
A4000 road
Old Railway Bridge Adjacent to Great Barr Street Bridge Grand Union Canal (Warwick and Birmingham Canal)
Old Railway Bridge (disused) Oxford Canal (Northern Section)
Old Railway Bridge Shropshire Union Canal (Wirral Line)
Old River Ancholme Northern Junction
River Ancholme
Northern junction with the navigable loop through Brigg, 1.75 miles long
Old Road Bridge No 104 Trent and Mersey Canal (Main Line - Great Haywood to Etruria)
Old River Ancholme Southern Junction
River Ancholme
Southern junction with the navigable loop through Brigg, 1.75 miles long
Old Quay Swing Bridge Manchester Ship Canal (Main Line)
Old Quay Lock
Manchester Ship Canal (Main Line)
Entrance to Runcorn Old Quay
Old Norton Townfield Bridge No 74 Bridgewater Canal (Main Line)
Old Roan Railway Bridge No 7C Leeds and Liverpool Canal (Main Line - Liverpool to Wigan)
Old Roan Bridge No 7D
Leeds and Liverpool Canal (Main Line - Liverpool to Wigan)
A59 road
Old Royd Lock No 17 Rochdale Canal
Old Shoreham Bridge River Adur
Old Town Bridge No 133 Oxford Canal (Southern Section)
Old Turn Roving Bridge Birmingham Canal Navigations (Newhall Branch)
Old Turn Junction Birmingham Canal Navigations (Main Line)
Old Warwick Road No 35 Stratford Canal (Northern Section)
Old Trafford Western Car Park Bridge Bridgewater Canal (Main Line)
Old Trafford Pipe Bridge Bridgewater Canal (Main Line)
Old Trafford Eastern Car Park Bridge Bridgewater Canal (Main Line)
Old Royd Pipe Bridge Rochdale Canal
Old Windsor Lock River Thames (below Oxford)
Oldbury Bottom Lock Birmingham Canal Navigations (Titford Canal)
Oldbury Junction
Birmingham Canal Navigations (Old Main Line)
Junction of Old Main Line and Titford Canal
Oldbury Top Lock Birmingham Canal Navigations (Titford Canal)
Oldbury Wharf Birmingham Canal Navigations (Old Main Line)
Oldbury on Severn
River Severn (tidal section)
Nuclear power station
Oldfield Quay Bridgewater Canal (Main Line)
Olinthus Bridge
Birmingham Canal Navigations (Wyrley and Essington Canal)
Lint House Lane
Oldington Bridge No 10 Staffordshire and Worcestershire Canal (Main Line: Stourport to Stourton)
Oldhams Bridge No 99A Huddersfield Narrow Canal
Oldham Road Bridge Rochdale Canal
Oldham Pipe Bridge Rochdale Canal
Oldham Broadway Bridge Rochdale Canal
Old Wharf Branch Junction Aire and Calder Navigation (Wakefield Section)
Old Rose Grove Bridge No 125
Leeds and Liverpool Canal (Main Line - Wigan to Leeds)
M65 Motorway bridge immediately south
Old Hall Street Bridge No 131B Leeds and Liverpool Canal (Main Line - Wigan to Leeds)
Onslow Bridge River Wey
Olton
Grand Union Canal (Warwick and Birmingham Canal: widened section - Main Line)
Lincoln Road Bridge No 85
Orchard Meadow No 78 Kennet and Avon Canal
Orchard Mill Bridge No 102
Grand Union Canal (Grand Junction Canal - Main Line)
Great Brickhill 1 mile east
Orchard Marina
Trent and Mersey Canal (Main Line - Middlewich to Preston Brook)
Bridge No 182
Ordnance Road Footbridge No 39 Lee and Stort Navigation (River Lee: commercial section)
Ordish Bridge No 33E
Trent and Mersey Canal (Main Line - Burton to Fradley)
A38T road
Orton Lock No 37 River Nene (main river)
Orton's Bridge No 1 Ashby Canal
Osborne House River Nene (tidal section)
Osney Railway Bridge River Thames (below Oxford)
Osney Marina River Thames (below Oxford)
Osney Lock River Thames (below Oxford)
Osney Bridge
River Thames (above Oxford)
Good moorings for Oxford between Osney Bridge and Lock (A420 road)
Osterley Lock No 98 Grand Union Canal (Grand Junction Canal - Main Line)
Osier Street Bridge Birmingham Canal Navigations (Icknield Port Road Wharf Loop)
Osier and Tiddle Widdle Islands River Avon - Warwickshire (Lower Avon Navigation)
Otherton Bridge No 82 Staffordshire and Worcestershire Canal (Main Line: Autherley to Great Haywood)
Otherton Marina or Arm Staffordshire and Worcestershire Canal (Main Line: Autherley to Great Haywood)
Otherton Lock No 36 Staffordshire and Worcestershire Canal (Main Line: Autherley to Great Haywood)
Otherton Lane Bridge No 81 Staffordshire and Worcestershire Canal (Main Line: Autherley to Great Haywood)
Otherton Railway Bridge Staffordshire and Worcestershire Canal (Main Line: Autherley to Great Haywood)
Oscote Barn Bridge No 28 Shropshire Union Canal (Birmingham and Liverpool Junction Canal)
Otter's Bridge No 68
Chesterfield Canal (Retford to the Trent)
Post Office and shops in Clayworth
Osberton Mill Bridge No 50 Chesterfield Canal (Norwood to Retford)
Osberton Lock No 53 Chesterfield Canal (Norwood to Retford)
Osberton Hall Footbridge No 48 Chesterfield Canal (Norwood to Retford)
Original Site of Lock 21E Huddersfield Narrow Canal
Oundle Bridge River Nene (main river)
Outwell
Middle Level Navigations (Old River Nene)
Junction of Old River Nene with Well Creek
Outer Zoo Bridge No 12 Grand Union Canal (Regent's Canal)
Owen Street Bridge Birmingham Canal Navigations (Old Main Line)
Outwoods Bridge No 38 Coventry Canal (Main Line - Hawkesbury to Fazeley)
Owersby Landing River Ancholme
Oughtringham Bridge No 24
Bridgewater Canal (Main Line)
Also called Lloyd Bridge
Ollerton No 3 Bridge No 89 Leeds and Liverpool Canal (Main Line - Wigan to Leeds)
Ollerton No 2 Bridge No 90 Leeds and Liverpool Canal (Main Line - Wigan to Leeds)
Ollerton No 1 Bridge No 91 Leeds and Liverpool Canal (Main Line - Wigan to Leeds)
Oliver Ings Bridge No 135 Leeds and Liverpool Canal (Main Line - Wigan to Leeds)
Old Hall Bridge No 160 Leeds and Liverpool Canal (Main Line - Wigan to Leeds)
Oxborough Wharf
River Great Ouse (River Wissey)
Oxborough Ferry
Oxford Road Bridge (A40) Grand Union Canal (Grand Junction Canal - Main Line)
Oxlease Swing Bridge No 33 River Kennet
Oxley Moor Bridge No 65 Staffordshire and Worcestershire Canal (Main Line: Aldersley to Autherley)
Oxlode River Great Ouse (New Bedford River)
Oxley Railway Bridges Staffordshire and Worcestershire Canal (Main Line: Aldersley to Autherley)
Oxford Street Bridge Rochdale Canal
Oxford Road Lock No 88 Rochdale Canal
Owston Ferry River Trent (tidal section - Cromwell to Keadby)
Owl Swing Bridge No 216 Leeds and Liverpool Canal (Main Line - Wigan to Leeds)
Office Lock No 2
Leeds and Liverpool Canal (Main Line - Wigan to Leeds)
Moorings above the lock