SIPPs: Risers, fallers & new entrants, who’s top of the SIPP deposit account pops?

At the risk of sounding like Tony Blackburn we thought we'd take a look at the risers, fallers, and the new entrants in the SIPP deposit account market this month. Who is 'Top of the Pops' this month? On the way up Not many rates on the way up this month, with the main exception being Cater Allen who have increased the interest rates on some of their short term fixed rates significantly. Need advice on your SIPP?...