Targeting top 1% is a big deal and a lot of effort. Sales cycles are long, with multiple decision makers. While we can help with just a list, the absolutely best solution in this case is ByPath.co.nz
Are you targeting SME or a particular VERTICAL?
whoiswhere data is really the best choice when you want to target more, maybe even the whole country. When you want to reach out to local companies, SMEs or a whole vertical.
There is no consensus about which companies are SMEs and which ones are large. The market is definitely divided and in some industries even a 10 staff firm is a significant player.
So if you are targeting larger companies and maybe not sure which industries or number of staff represent them best, we recommend to start from an annual license to Kompass. This cloud based solution will offer access to data at less than 5c per record of 27,000+ companies and you can do proper market research and pick and choose your target market.