TV Shows #1 Mystery Cache

These caches are a series of caches where you have to answer questions on a certain TV programme, which will take you to the final location of the cache.

THE CO-ORDINATES ARE NOT FOR THE CACHE, BUT FOR A PLACE NOT TOO FAR AWAY.

You are looking for a micro container... There is NO pen/pencil!

A quick clue to the thing you're looking up. It is a TV show that happens to be one of my favourites, and is filmed in and around Cardiff.

1. The year this programme first started in the UK? ABCD
2. The BBC channel the programme first aired on? E
3. The number of episodes in a series? FG
4. The number of people on the team in the second episode of the first series? H
5. The numbers in the number plate of their car? IJ
6. What is the approximate number of storeys of their base? K

These co-ordinates may help- N51 27.843 W003 09.817

For the final location...
N51 F(D+K).(A+J)(H-F)(D-G+F+A)
W 000 E(G+F).(B+I+F+H+K)(J+K-F-H-A)(C+G+E-K)

You can check your answers for this puzzle on Geochecker.com.