Rank and UBM, both posting double digit percentage gains, are jostling for top spot in the FTSE 250.Casino and bingo hall operator Rank said it would not pay an interim dividend, but shares in the gambling firm rallied as half year results came in better than expected.Business publisher United Business Media saw profits fall in the first half due to weaker performance from its events and publishing businesses.But the group said it was satisfied with the result, considering the tough economic conditions.Pest control and delivery group Rentokil is higher after saying losses at its parcel delivery arm will be less than previously feared.Home maintenenace specialist Homeserve fell back after it said the year has started well with continuing policy growth and high renewals rates across its three core membership businesses.FTSE 250 - RisersUnited Business Media (UBM) 425.75p +14.68%Rank Group (RNK) 77.50p +11.11%Enterprise Inns (ETI) 140.50p +9.13%Logica (LOG) 101.75p +8.82%Punch Taverns (PUB) 103.50p +7.25%Rentokil Initial (RTO) 96.75p +6.91%Moneysupermarket.com (MONY) 71.75p +6.30%Interserve (IRV) 196.75p +5.64%Mcbride (MCB) 148.75p +5.50%Galiform (GFRM) 55.50p +5.21%FTSE 250 - FallersSVG Capital (SVI) 110.00p -4.76%Aquarius Platinum Ltd. (AQP) 243.50p -4.51%Homeserve (HSV) 1,413.00p -4.07%F&C Asset Management (FCAM) 73.75p -2.96%Aberdeen Asset Management (ADN) 128.00p -2.48%Yell Group (YELL) 30.25p -2.42%ARM Holdings (ARM) 126.75p -2.12%Beazley Group (BEZ) 104.75p -2.10%Robert Wiseman (RWD) 417.50p -2.05%Synergy Healthcare (SYR) 501.50p -1.86%