Which is the busiest or biggest service area?
The biggest motorway service area in the UK (or Ireland) is Cobham on the M25. It stretches across two floors and only opened in 2012, filling a large gap on a very busy section of motorway. Its 36-pump petrol station is one of the biggest in Britain.
As motorway services are private businesses, details on which is busiest do not get released, but Cobham is very likely to be the busiest and one of the most profitable.
See also: Smallest