Online share dealing

[Centurion07]

I have a couple of questions that, although I've read the answers to, I'd just like to double-check with real people that actually know about these things.

So firstly, if I buy/sell, say £200K of shares in a company, through X-O.co.uk, are they ALL traded at the quoted price, or will they fulfil as much of that as possible at that price, and then fulfil the rest at a different price as and when they can? Seems a bit silly but I read that dependant on how many buyers/sellers there currently are can affect this. If that is the case, is there any way to tell what the current threshold would be to get 100% of the trade done at the quoted price? Is £200k a large enough amount to affect this or does it depend on the size of the company being traded or something else?

The bid/ask thing. If the difference is 2p, any shares I buy have to go up by 2p before I make a profit (less trading fees)?

Any other obvious things I should be aware of being a total noob to this?

[Centurion07]

Cheers.

What exactly is the relationship between the bid/ask spread and the actual share price as it seems to differ for each company?

Edited by Centurion07 on Tuesday 31st March 11:41

[Centurion07]

Would I be right in saying the bigger spread, the less liquidity that company's shares have and, as a result, are more likely to cause problems if trying to deal a large amount?

[Centurion07]

Cheers. Hadn't seen your post when I typed mine.

That's pretty much what I understood it to be.

I don't seem to be able to locate the NMS anywhere though, unless it's displayed as something else?

[Centurion07]

Thanks for that.

I was kind of tempted to dabble a little bit, but the amount of knowledge required seems a little imposing.