Having dealt with many agencies over the past couple of years in our quest to buy a house, we feel we have a good comparison base to work from! Simon, our contact staff member at GP was excellent - he always returned phone calls promptly, remained extremely calm under pressure (of which there was lots!) and managed to keep us calm - and was superb at keeping us continually updated. For the first time we felt we could actually trust the agent we were dealing with. He was professional, courteous and always went the extra mile, which on occasions meant him working later on our behalf.
Our only complaint with GP was that we were pressurised into using Countrywide as our solicitor rather than one we'd sourced ourselves. This turned out to be a huge mistake - they were TERRIBLE and resulted in us having to spend hours chasing up and effectively doing much of the work they should have done ourselves. Its a sham because it let down the image of GP who were great - we'd recommend NOT using Country wide, they are too big a company with not enough interest in customer care.