London venue and Hotels
 

Our company is launching new product. So we need some business venues in London City suggest some good venues or halls
Also suggest any good business hotels in Central London

There are 100s of options.

You are going to have to narrow things down a lot.

What size venue? What sort of budget? What sort of facilities?

The really there's a lot of research involved in organising this type of thing - I organise events and spend hours researching venues. I don't know that anyone here is going to do that for you...so get googling. If you want comments on any specific venue - we can probably help more in that way.

there are also venue finding/booking services that can be useful. They generally get a cut from the venue rather than charging you a fee. I prefer to do the work myself, but if you are trying to do this from abroad, it might be a good idea.

Actually, probably 1000s of options. :-)

The official London convention centre is at http://business.visitlondon.com/

there are many options depends on your budget

http://www.fixpod.com.au/

completely agree with nona1 there are lot of options in London city. you can search http://www.venues.org.uk/ or http://www.thecitycollection.org to find venue across London
The Hilton, Crown Plaza, Grange city are world class business hotel google it