I recently invested $1000 into Bitcoin and transfered to a miner and she mines and invests. I have watched my investment go up in the last seven days to $111060.00, firstly is this possible or does it seem too high?
Far too high. Those are made up numbers to convince you pay more, hence get scammed for even more money.
Second question I am being asked to send $1000 to go through blockchain technology before I can withdraw, is this correct?
Any site that tells that you have money, but asks for more money in order to withdraw (instead of using a fraction of the money you have there) is plain scam.
Lastly my acct is showing in USD so I have been told I can transfer straight from the company to my bank and it will convert to pounds, is that correct?
The banks can convert the money "on the fly". Not at the best rates, but it can be done. However, it's irrelevant, since you won't receive money from that website.
Very confused as to whether I have been scammed or not and trying to find someone who knows
Yes, you have been scammed. Please do proper research next time you invest. For example ~99.9% of the cloud mining websites are either scam, either not profitable, so you should rule out cloud mining until you acquire more knowledge. Also everything that asks for deposits and show high return need extra attention, since it's much more likely to be scam than legit.