Four days of celebrations to mark the Queen's Golden Jubilee are to come to an end with a service of thanksgiving at St Paul's Cathedral in London.

Around 2,500 people are expected to join members of the Royal family for Tuesday's service which will be followed by a national parade in front of Buckingham Palace.

Toby Hunt: Nervous

Among the people taking a leading part on the jubilee service will be sub organist and assistant director of music at St Paul's, Huw Williams, who is originally from Swansea.

For Mr Williams it will be the second time he has played the music for a Royal occasion - the first was for the service celebrating the Queen Mother's 100th birthday.

However, he is far from overawed at the prospect of playing to

"You are just slightly above the level of the congregation, so in a way you feel a bit detached.

"but on the other hand, you do get an overview, so you can see that, 'Oh, there's the prime minister, there's Prince Charles, there's the Queen, endless royal family'.

"That's quite exciting in some way but really you have to be quite single minded.

There have been Jubilee street parties up and down Wales

"If I were the chauffeur driving the car, you can't think who is in the back, you have to go and concentrate on what you are doing."

While Mr Williams will be responsible for playing the mighty processional music and anthems at Tuesday's ceremony, Cardiff student Toby Hunt will also be playing a part.

Toby, a 17-year-old sixth former at Bishop of Llandaff School in Cardiff has been chosen to read the lesson.

"It's a great opportunity to be able to take part in something like this," said Toby.

"I'm a little nervous but that is my excitement more than anything else."

Outside the cathedral eager to get a picture of the Queen will be Wrexham photographer Colin Edwards.

A veteran of the big royal events, Mr Edwards is such a huge fan he has an exhibition of 120 of his favourite photos of the Queen at a Jubilee exhibition in Ruthin.

Prince William was in Swansea on Sunday

The service and 3,000 strong parade down the Mall and Horseguards which follows will provide the culmination to four days of national celebrations.

On Sunday, Prince Charles and his sons Prince William and Prince Harry attended a church service in Swansea.

The teenage princes, both soccer fans, even forwent England's opening game in the World Cup to accompany their father.

On Monday hundeds of street parties went across across Wales with not even the rain damping down the party spirit.

There were also a number of stage-managed musical events around Wales.

Wales's smallest city - St David's in Pembrokeshire - was the venue for a party with a difference.

Later in St David's Cathedral, the BBC National Orchestra of Wales offered a classical take on the celebrations.

Completing Monday's party theme more than 1,800 beacons and bonfires were lit around the UK to mark the anniversary.

Meanwhile, anti-royalists are to continuing a three-day festival at Pontypridd in a counter-attack to the celebrations.