That is a valid format for a UK mobile (cell) number. The 7 in the position that it is in identifies it as a mobile number. 00 is the international gateway code, 44 is the country code for UK. Short of dialling it there's no way to know whether it is actually an active number.
When a telephone number begins with 0800 in the United Kingdom, it is usually a business and it is not geographically linked to any specific part of the United Kingdom.
Somewhere in the United Kingdom
There is no company in the UK with that name. It's probably a scam.
Alexander Graham Bell was born in Scotland, United Kingdom. He invented/designed the telephone while staying at his holiday home in Ontario, Canada. He built the first telephone while staying in Massachusetts, USA.
One can find an United Kingdom telephone directory online from sites like White Pages. Also, a great place to find a telephone directory for the local area is in a local telephone book available at pay phones.
the suffix "co uk" is used in the United Kingdom. "co" stands for "company" and "uk" stands for "United Kingdom". this suffix ususally follows a world wide web domain.
Gas, Electricity, Water-rates, Council Tax, Telephone, Food, Cable TV, Mobile Phone
A telephone number beginning +44 7789 is a mobile phone in the United Kingdom.
Bath, United Kingdom has one Hilton hotel and it is located on the River Avon. Its exact location is Walcot Street, Bath BA1 5BJ, United Kingdom. The telephone number for this location is 44-1225-463411.
You need to live in the United Kingdom and contact your phone company. You will most likely be charged a fee to use this telephone number. Each telephone company will probably charge different rates.
The United Kingdom is in Europe.
It's certainly possible. The example you gave indicates a mobile (cell) phone number. The country code (44) is correct for the UK, and the number of digits fits the UK system... the leading 0 is (quite rightly) omitted after the 44 when calling from overseas.