Approach a few estate agents as a buyer. See how good they are at trying to sell you various houses. Are they keen sellers, following up asap, getting feedback etc. Also get 'a feel' for them.
Set the right price. The EA will give you a good idea, but they lie, they will be over geneours to get your business.
Do you use the sold price finder on rightmove and zoopla? They will tell you what the neighbouring houses have sold for (and in the wider local community). This will be your best bet for setting a realistic price. Do bear in mind that no one will offer asking price, so you need to be priced higher than you want - just keep it reasonable, e.g if you want £90k market it at £95.
Also bear in mind the effect the stamp duty threshold has. If your house is around the 250 mark - no one is going to pay more than 249,999 for it, because they stamp duty jumps up.
Is your house ready to market? Are all odd jobs done, garden tidy, well decorated, de cluttered etc?
If not get it done, it is a hard time to sell and people are extra picky in a market like this.
Good luck!