Doggit
TF
you dont sell give to the the kids live seven years they dont pay tax they pay you an income
The taxman closed this loophole. You'll pay CGT at the point you give it to the kids, but it'll reduce you're Inheritance tax bill, so you're taking the hit (and paying the tax now) so the kids get to keep more when you're gone. They'd get taxed on the rental income they receive, and they'd then give you the balance, but the taxman would then try and tax you on it as well (assuming they find out of course), because they'd view it as a way of avoiding some sort of tax.
This is where trust advice is needed. You can put the property into a trust for the kids, and still receive the income from the property, but they're complicated, and you need someone with specialsed knowledge to set it up.
Osborne buggered up the buy to rent sector (also known as the self employeds pension plans) by adding 3% to any 2nd house purchase, so on a £250K property, you now need to find £20K for stamp duty.