Whether you are a seller or buyer, you have to pay the conveyancer whom you hire. For example, you will need to hire a conveyancing solicitor to do the legal legwork for you when selling your home. The task will also include drafting the sale contract and negotiating the terms with the buyer.
Then the solicitors of each party will agree on a completion date and oversee the exchange of contracts. For all their effort and services, you have to pay conveyancing costs to your solicitor.
Similarly, if you are purchasing a home you have to pay the solicitor for various types of legal tasks. Your solicitor will negotiate the terms with the sellers, request different types of searches, exchange contracts, transfer the funds, and at last register you as the new owner of the property with the Land Registry. This is why you would need to pay conveyancing fees to your solicitor as the charge for these services.