They have no results available... not sure why anyone would pay when there is no evidence of profitability!
I've personally had decent results with him in the past and of course they offer a trial for a quid, but I've actually switched to LayTips.co.uk now. They offer four tips per day (vs. RLB's 1-2) and have what they call the "pension pot" system. Simply, you set a profit aim for the day on the first tip, and stop betting as soon as you hit your target, even if there's more tips to go. That means even if your first bet loses, you've still got scope to make it up and profit with the latter three tips. Again, this all works because of lay betting's high strike rate (87%ish as I remember), and this system has seen that LayTips have only had five losing days in the last three and a half years.
And of course, all their results are working, and ready for you to assess and if you wish, double check against the racing results websites. I signed up a couple of days ago and am starting small, but so far, so good: