The A5120 is an A-class road in Bedfordshire

Bedfordshire

Bedfordshire is a ceremonial county of historic origin in England that forms part of the East of England region.It borders Cambridgeshire to the north-east, Northamptonshire to the north, Buckinghamshire to the west and Hertfordshire to the south-east....

, linking the conjoined towns of Ampthill

Ampthill

Ampthill is a small town and civil parish in Bedfordshire, England, between Bedford and Luton, with a population of about 6,000. It is administered by Central Bedfordshire Council. A regular market has taken place on Thursdays for centuries.-History:...

 and Flitwick

Flitwick

Flitwick, pronounced , is a small town and civil parish in Central Bedfordshire, England. The nearby River Flit runs through Flitwick Moor, a nature reserve and a Site of Special Scientific Interest.-Location:...

 to Dunstable

Dunstable

Dunstable is a market town and civil parish located in Bedfordshire, England. It lies on the eastward tail spurs of the Chiltern Hills, 30 miles north of London. These geographical features form several steep chalk escarpments most noticeable when approaching Dunstable from the north.-Etymology:In...

 and, via the M1 motorway

M1 motorway

The M1 is a north–south motorway in England primarily connecting London to Leeds, where it joins the A1 near Aberford. While the M1 is considered to be the first inter-urban motorway to be completed in the United Kingdom, the first road to be built to motorway standard in the country was the...

, Luton

Luton

Luton is a large town and unitary authority of Bedfordshire, England, 30 miles north of London. Luton and its near neighbours, Dunstable and Houghton Regis, form the Luton/Dunstable Urban Area with a population of about 250,000....

 and London

London

London is the capital city of :England and the :United Kingdom, the largest metropolitan area in the United Kingdom, and the largest urban zone in the European Union by most measures. Located on the River Thames, London has been a major settlement for two millennia, its history going back to its...

. It connects with the M1 at junction 12, being the sole road at this junction, in close proximity to the Toddington services. On its route from Ampthill to Dunstable, the A5120 serves Westoning

Westoning

Westoning is a village and civil parish in Bedfordshire located about a mile south of the town of Flitwick. It is about two miles north-east of junction 12 of the M1 motorway, and beside the First Capital Connect railway line to London and beyond...

, Harlington

Harlington, Bedfordshire

Harlington is a village and civil parish located in Bedfordshire, England, near the M1 motorway. The nearest town is Flitwick about three miles to the north...

, Toddington

Toddington, Bedfordshire

Toddington is a large village and civil parish in the county of Bedfordshire, England which is situated 5 miles NNW of Luton, north of Dunstable, south west of Woburn and 35 miles NNW of London on the A5120 and B579. It is 0.5 miles from Junction 12 of the M1 motorway and lends its...

 and Tebworth

Tebworth

Tebworth is a hamlet located in the Central Bedfordshire district of Bedfordshire, England.The settlement is close to Wingfield and Hockliffe, with the nearest town being Houghton Regis. Amenities in Tebworth include "The Queens Head" pub....

. Unusually for an A-road, it does not meet another A-road at any point between its start on the A507

A507 road

The A507 is an A-class road in England, linking the M1 motorway near Milton Keynes to the A10 at Buntingford. Beginning at junction 13 of the M1, the road heads east past Ridgmont to Ampthill. Here it passes between Ampthill and its close neighbour Flitwick, essentially separating the two. After...

 and its end on the A5

A5 road

The A5 is a major road in England and Wales. It is also the first Roman built road in England hence the name Roman Road. It runs for about from London, England to Holyhead, Wales, following in part a section of the Roman Iter II route which later took the Anglo-Saxon name Watling...

. This would change if the A505 Dunstable North Bypass were to be built, however.

When the A5120 meets the A5 in Dunstable, the latter is multiplexed with the A505 road

A505 road

The A505 is an A-class road in the United Kingdom. It follows part of the route of the Icknield Way and the corresponding Icknield Way Path.-Bedfordshire:...

. The road passes through the Houghton Regis

Houghton Regis

Houghton Regis is a town and civil parish sandwiched between the major towns of Luton to the east and Dunstable to the west. The parish includes the ancient hamlets of Bidwell, Thorn and Sewell...

 area of Dunstable as it approaches the town from the north. The road actually continues past the A5, without its A5120 number, as an unclassified road, into the Beecroft industrial estate, where it meets the B489 road from Ivinghoe

Ivinghoe

Ivinghoe is a village and civil parish within Aylesbury Vale district in Buckinghamshire, England, close to the border with Hertfordshire and Bedfordshire. It is four miles north of Tring and six miles south of Leighton Buzzard, close to the village of Pitstone.The village name is Anglo-Saxon in...

.