Whatever the estate agent has told you to sell the house at, add at least £10,000 to it (maybe more depending on the value of the house).
Many estate agents suggest a low asking price so the house sells quickly and they get their commission.
A house next to me went on the market at £284,995 a week or so back and the first people looking at it offered the full asking price and it sold the same day.
They could have easily got £10,000 more for it.
It is a sellers market so put up the price.