Thanks for your reply.
My research came up with,
1. Stamp duty is not payable if the following applies. Paragraph 3.19A of the government upload states "
For purchases on or before 26 November 218 , there is a replacement of a main residence if, at any time before the purchase, the purchaser, or their spouse, disposed of a major interest in another dwelling and the purchaser has not purchased another main residence in the period between that disposal and the new purchase. That other dwelling must have been, at some time, the only or main residence of the purchaser.
The above fits my situation. I sold my main residence in 1993. The inherited property was not purchased as a main residence and has never been one.
The following article also seems to confirm this
For existing property owners to be exempt, they must be buying a main residence rather than a second home or investment property and have previously owned another main residence that they sold at any time before the announcement of the stamp duty surcharge on November 26 2015.
Anyone who fits these criteria has until November 26 2018 – three years after the announcement in last year’s Autumn Statement – to buy an additional home without paying the extra stamp duty.
For example, a landlord who owns buy-to-let properties but currently lives in rented accommodation and sold their previous home before November 2015 can buy a new home without paying the surcharge
I appreciate your answer but wonder how do you see the above two points not
applying to my situation ?