Worth reading this article.

http://www.propertyindustryeye.com/sale-tender-slammed-totally-unacceptable-ex-naea-boss/

I agree, theres a conflict of interest for agents to use this. Buyers should NOT be charged a fee as their client is the vendor.

Well worth reading. Relief now only 18 months rather than 3 years.
http://www.dailymail.co.uk/money/experts/article-2650656/We-moved-family-home-year-ago-Will-pay-capital-gains-tax-sell-lived-20-years.html

Whatever happened to caveat emptor (let the buyer beware)?

http://www.telegraph.co.uk/finance/personalfinance/houseprices/10864514/Failed-property-survey-Now-sellers-must-disclose-all.html

Looks like more nanny state interference to me.
A simpler solution would be to change to the Scottish law for property transactions which includes the seller paying for a Home Report, completed by a surveyor, before they can sell. This details property defects.