In Britain there are four nations,which are:Wales,Republic of Ireland,England and Scotland which became an independent nation partly because of the dynamic interaction between native tribes and incoming settlers.Peoples usually,in their language describe people who live in Britain as "British Peoples" even if Wales,Ireland an Scotland do not really appreciate it or might be offended if people uses this word to describe them since they like to specified their nationalities.
As Britain has four nations,thoses might have many differences.We can talk about culturals tradition that's why The Scots and Welsh have right to feel aggrieved whenever the term 'English' is used wrongly, to mean all three. We also have food (for example we have Welsh Faggots),languages (in Wales,we have two languages,english and welsh:In 1967 the Welsh Language Act was passed, recognizing the status of Welsh as an official language.).
In UK,there are many national symbols that are used.Among other things,we can talk about for the
FLAGS,the red dragon on the Wales's flag,the St Andrew's Cross on the Scotland's flag,the St Patrick's Cross for the Ireland's flag and the St Georges's Cross for the England's flag;for the
COLORS,we have the red,the green(in Wales),Blue(in Scotland).For the
FLOWERS we have the Rose(national flower of England),the Thistle(national flower of Scotland),the Daffodil(national flower of Wales) and the Shamrock(national flower of Ireland).Fort the
CLOTHES,in England we have many national dress,for example,for the Pearly Kings and Queens,Morris Dancers,....we can see all of them in the link below (
http://www.woodlands-junior.kent.sch.uk/customs/questions/costume.html ).In Scotland,the national dress is a kilt and The national costume of Wales is a long skirt, worn with a petticoat and topped with a shawl,and fllowing the link below :(
http://www.calicokate.co.uk/images/welsh_costume.jpg ), we can see the traditional welsh children's costumes.
We also have many national days which are celebrated in the UK,for Wales the national day is
St David's day on March 1st,for Northen Ireland the national day is
St Patrick's day on March 17,for England the national day is
St Georges's day on April 23 and for Scotland the national day is
St Andrew's day on November 30.
In Britain, the main language is English (British English),but People in Wales speak a completely different language. About 25% of the people there still speak in their native Celtic tongue called welsh.Even In some regions of Scotland, Gaelic is used as a first language (particularly in some areas of the Highlands and the Western Isles). All over Scotland, the accent varies, some words are different but overall it is not too difficult to understand.
Finally,is common to see people living in Britain who do not belong to any of the "four nations",as there is many nationalities,peoples coming from all over the world :Africa,China,EU,United States,.... that's why we can see people with different complexion.
who got the biggest face in the city ,after that we are going to see the Buckingham Palace where the Head of State resides, and you can frequently see the Queen’s car heading down The Mall.
and finally we are going to see the Tower London which is one of London’s oldest landmarks, started by William the Conqueror in 1066. 
.As we will be around the Tower bridge of London 
,we will going to visit the Science museum 
and have our lonch there.Before continue we could just stop at Hyde Park place 
to eat some lunch.After eating,we will go to Oxford streeet to do some shopping at Oxford street.
with us to know where to take it and depending on the zone we will need to pay £4 or £5 .At the end of our visit,we could just go back to at Victoria Station 10minutes before 17:35 to ait for our train home.
