Mouth ulcers are also a possible symptom of a viral infection that mainly affects young children, called hand, foot and mouth disease. Speak to your GP or call NHS 111 if you're unsure. Read about the symptoms of hand, foot and mouth disease.
It was not until 1965 that a national upper limit of 70mph was introduced for all roads, including motorways. Since 1977 the speed limit for cars and motorcycles on dual carriageways has been 70mph, with a 60mph speed limit on single carriageways.
The upper speed limit of 70 mph on the motorways was introduced during the oil crisis in the 1970s in order to preserve oil, and has been kept ever since. Ray Mitcham, Southport, UK The speed restrictions were introduced as a result of the Suez crisis and oil shortages which did occur at about that time.