Motorway service areas in the United Kingdom and Ireland, also known as services or service stations, are rest areas where drivers can leave a motorway to refuel/recharge, rest, eat and drink, shop or stay in an on-site overnight hotel. The vast majority of motorway services in the UK are owned by one of three companies: Moto, Welcome Break and Roadchef. Smaller operators include Extra, Westmorland and EG Group.
The first two service areas in the UK, Watford Gap and Newport Pagnell, opened with temporary facilities when the M1 motorway was opened, on 2 November 1959. It is a common misconception that Watford Gap was the first service area to fully open, when in fact Newport Pagnell was first, on 15 August 1960, a month before Watford Gap. Initially, most service areas were designed to be bold and attractive, with many opening viewing platforms and featuring fancy restaurants. The most famous example of a service area from this era is Lancaster, which features a 65ft tower which previously contained the main restaurant. However, it became apparent in the late 1960s that such fancy amenities were unprofitable, so service areas began offering an increasingly basic service. High street brands were introduced to service areas in the 1990s, with most facilities eventually becoming franchises of well known brands.
As more service stations opened, the number of operating companies increased, with sites run by the Rank Organisation, Granada, Pavilion, Take a Break and Esso, among others. Through acquisitions and mergers, there are now only three major operators. In an attempt to break this oligopoly, in 2001, the government proposed allowing "mobile fast food vans" to operate at the areas, though this idea never came to fruition.
Originally, service areas were government-owned and leased to the operating companies. From 1992 onwards, new sites were planned and owned by private operators, and existing sites sold to them.
In 2007 an AA survey concluded that service areas had improved in the previous three years, but cleanliness and pricing were still major issues.
Opposition towards service areas has grown, with some planning applications being refused: some notable examples are Catherine-de-Barnes on the M42 and Kirby Hill on the A1(M), both of which have had applications contested. Despite concerns of local residents, Beaconsfield on the M40 opened on 17 March 2009, and Cobham services opened in September 2012. Kirby Hill would eventually get approved for construction in April 2021.
In 2017, Transport Focus began an annual review of service areas, with each site ranked on a league table. Reviews have taken place every year since. 
The latest UK motorway service area to open is Rugby services, operated by Moto Hospitality which opened on 30 April 2021.
Ireland has six official motorway service areas, but 16 in total. The first service area, Lusk services, opened on the M1 on 8 September 2010.
For many years, the National Roads Authority opposed building services, preferring traffic to use existing businesses in bypassed towns, and that the motorway network was not large enough to support them. However, in 2006 it changed its mind, and the Roads Act 2007 made provision for a Motorway Service Area Scheme to allow the construction of services. The NRA held a competition to determine an operator for the first three service areas to be opened. SuperStop, a consortium consisting of Petrogas (Applegreen) and Tedcastles Oil Products (TOP), won the contract. These first services were Lusk (M1), Castlebellingham (M1) and Enfield (M4) and were all opened in late 2010.
Motorway services began to be developed privately from 2011, following delays from the NRA due to the economic recession. The first of these private sites was Cashel services on the M8, which was built by Topaz and opened on 9 June 2011.
The NRA awarded the second batch of three services (Gorey, Athlone and Kilcullen) to Topaz in 2014. SuperStop objected to the decision - resulting in the construction and opening of the three services being delayed. All three sites would eventually be opened in 2019, despite Gorey being constructed as far back as 2015.  The sites would also open under Circle K instead after Topaz had been rebranded under the banner in 2018.
The newest motorway service area in Ireland is the Portlaoise Plaza, which opened on 31 July 2020. The third wave of services is currently under review by Transport Infrastructure Ireland (successor of the NRA).
By Number of Locations:
By Number of Locations:
Current government policy is that the interval between core motorway service areas should be no more than 28 miles or 30 minutes travelling time, whichever is the lesser. A previous minimum separation of 12 miles was removed in 2013. The current 28 miles is derived from 30 minutes driving time for an HGV limited to 56 mph and replaced the previous 30 miles in 2008.
Initially service areas were located between junctions (on-line sites), having their own entry and exit slip roads. On-line sites usually have a separate site for each direction of travel, but e.g. Cobham services has a single site, accessed directly from the clockwise carriageway and via a tunnel from the anticlockwise carriageway of the M25.
In 1992, the system was changed so that the developer became responsible for choosing the site of a motorway service area, and consequently junction sites became the preferred option as they are cheaper to construct, as well as being accessible to traffic travelling in several directions. Following a public consultation in 2007/8, the Department for Transport/Highways Agency announced that new services should be located at on-line sites, unless a junction site is the only possibility.
Two of the most recent openings, Wetherby (2008) and Beaconsfield (2009), are examples of junction sites: they are located at A1(M) junction 46, and M40 junction 2 respectively. However, more recently still, Cobham (2012) and Gloucester (2014) are on-line.
The siting of motorway service areas can be contentious, leading to protracted public inquiries, and often vociferous local campaigns against proposed schemes.
The operating company must pay the full cost of constructing the entry and exit slip roads, signage, and all other features required for safe access to motorway services, as well as the motorway services facility itself. In other countries,[where?] the authority responsible for the highway tends to subsidise these costs on the grounds that these areas are partly a public service to drivers. The leases provide that motorway services must operate 24 hours a day, and the costs of providing utilities and services are high. With very few customers in the early morning, they need to earn the money in other ways.
Government policy for motorway services has been set out in a succession of Department for Transport Circulars, the current version being 2013. This sets out various facilities that must be provided in a new service station. Existing services that do not comply, because the requirements have changed, must achieve compliance as part of any significant refurbishment. These are enforced on operators either by the terms of their lease or by the need for the Highways Agency to agree to provide access to the motorway, and planning permission should be granted only for facilities that comply. The requirements include 24-hour, 365-day provision of:
A picnic area with a minimum of 10 tables each seating 6 people was required up to 2013, and is still required in order for a picnic area to be advertised on signage.
The following restrictions also apply:
Lodges for accommodation are permitted. Conference facilities or business centres and retail space are permitted; the size of each of these was limited, basically to 200 m2 and 500 m2 respectively, until 2013, but are now left to the planning system.
Originally, service areas were allowed to sell alcohol with food. Sale of alcohol was outlawed on service areas on government-owned land from 1961, permitted from 1998, banned for new sites from 2008, and permitted again from 2013.
The government policy distinguishes "service areas" and "rest areas". There are 3 rest areas (Todhills, Leeming Bar, and Scotch Corner). All were existing facilities on trunk roads that were upgraded to motorways, and now, in fact, meet the requirements for service areas. There is a further category of Truck Stop, serving HGVs only.