(Sharecast News) - London's FTSE 250 climbed 0.85% to 18,984.09 on Wednesday, with Galliford Try surging as it reported a 4% increase in first-half pre-exceptional pre-tax profit and said full-year turnout is expected at the upper end of analysts' current range. However, analysts at Canaccord seemed unimpressed with the construction company's performance as they reiterated a 'hold' rating and 1,075p price target."Outlook comments are sensibly cautious with some commentary around the potential implications of Brexit, mainly being the risk of the negative impact on business and consumer confidence, along with the obvious supply chain and currency issues. Shares offer a good yield but relative to other pure Housebuilders it is not overly attractive and we would prefer other names in the wider housebuilding sector at this point," said a note from the broker.Omni-channel sports betting solutions provider Playtech climbed after extending its sportsbook partnership with Codere, with a new contract, which will run until late 2022, covering its retail presence and online facilities in Spain, Mexico, Panama, and Colombia.Tullow Oil gushed higher after swinging from a loss before tax of $286m to a pre-tax profit of $261m last year, though the company warned that a no-deal Brexit could cause uncertainties on its North Sea decommissioning programme, while Indivior recovered after having dropped earlier in the week as investors feared its defeat in the US Court of Appeals would see the market flooded with generic versions of the company's anti-pioid treatment.Just Eat was the top faller, closely followed by Great Portland Estates and Derwent London which fell on the back of initiations at 'sell' by Berenberg, with analysts at the broker issuing respective target prices of 600p and 2,650p as they examined the sector as a whole and the impact of possible Brexit scenarios."We expect less desirable, secondary assets to come under the greatest pressure, but prime assets are unlikely to be immune. Derwent and Great Portland, which have significant secondary asset exposures due to medium-term pipelines and falling development activity, remain most exposed," said a note from the broker.The news also dragged down other property outfits, with F&C Commercial Property Trust, Capital & Counties Properties and Intu Properties each falling lower.Finally, online trading services provider Plus500 continued to sink after its warning that 2019 profit would be "materially lower" than market expectations due to new European Union regulations on financial products.Market MoversFTSE 250 (MCX) 18,984.09 0.85%FTSE 250 - RisersGalliford Try (GFRD) 779.27p 8.23%IP Group (IPO) 107.31p 4.38%Playtech (PTEC) 394.10p 4.20%Tullow Oil (TLW) 219.80p 4.17%Acacia Mining (ACA) 197.65p 4.03%Babcock International Group (BAB) 548.13p 3.69%Indivior (INDV) 108.50p 3.63%Redrow (RDW) 596.25p 3.43%Cineworld Group (CINE) 264.50p 3.40%Weir Group (WEIR) 1,535.00p 3.26%FTSE 250 - FallersJust Eat (JE.) 725.40p -2.24%Great Portland Estates (GPOR) 723.60p -2.08%Assura (AGR) 57.50p -2.04%Cranswick (CWK) 2,532.00p -1.78%Moneysupermarket.com Group (MONY) 310.80p -1.65%F&C Commercial Property Trust Ltd. (FCPT) 126.06p -1.52%Plus500 Ltd (DI) (PLUS) 1,116.00p -1.50%Derwent London (DLN) 3,202.00p -1.36%Capital & Counties Properties (CAPC) 250.40p -1.22%Intu Properties (INTU) 114.70p -1.21%