I used Roberts to buy my house in 2010, and then to sell it in 2025. Everything was great both times - detailed plan available online, easy to contact, good cover when lead conveyancer is away, etc.
No need to be local to use them. Almost everything is electronic. Some things can be emailed, printed, signed in ink and scanned/photo for electronic return. Only about 2 things required the use of post to return a wet signature.
They are quite flexible, eg, I was buying and selling separately, but ended up exchanging contracts on the same day, and also completing on the same day a few weeks later. Due to that, it was easiest to process it as a chain to minimise money transfers which is what Roberts did.
My sale only took 4 weeks to exchange of contracts, very happy with how everything went.