I need some help on which London location to select for a small office?

I am from India working as Sr Business Development Manager for a US based Software Product Company catering to the immigration domain. We now want to setup a sales office in London to cater to UK and European markets. In this connection we have been recommended the following locations for office space:

1)Princess House, Princess Way , Swansea, SA 1 3LW, UK
2)Hayward House North, Dumfries Place, Cardiff CF 10 3GA, UK
3)Broad Quay House, Prince Street, Bristol, BS1 4DJ, UK
4)4200 Waterside Center, Solihull Parkway, Birmingham Business Park, Birmingham, B37 7YN, UK
5)Riverside House, Riverside Drive, Aberdeen, AB 117 7LH, UK

Would sincerely appreciate your help in helping me choose which would be the ideal, cost effective location easily accessible to London鈥檚 tube rail as well. Hope you will do the needful.

Those locations aren't in London!

Swansea and Cardiff are in Wales, Bristol is in South West England, Birmingham is a couple of hours north of London, Aberdeen is way up in Scotland and not very accessible for southerners. I couldn't say which is best out of those, they are all urban locations with reasonably good transport links to the rest of the UK.

Go to the person who has recommended you.

Regards

hmm i know london well so i gotta say 1 or 5