Beware of them. They sound very profressional with the whole contract and emails but in reality they just have you create a bitcoin exchange account and ask for your password and id, they then create a 'watch-only' wallet with a amount of £150k which is non spendable and ask you to fund your own wallet of 10 percent of what you lost. Guess what happens next your money is in the hand of these expert scammers.
Afcourse i did my research before parting with any money and sussed them out.