The FTSE Small Caps index is down 0.1 percent by around midday, outpeforming bigger declines of 0.8 percent on the blue-chip FTSE 100 (FTSE: ^FTSE - news) and 0.6 percent on the FTSE 250 (FTSE: ^FTMC - news) mid-cap index.
E-commerce and consumer technology company Expansys slumps 35.4 percent after the company issues a profit warning, stating that trading in the second-half of the year has been below its expectations.
APR Energy (Other OTC: APRYF - news) , which makes turbines and diesel generators, also falls 2.9 percent - having at one stage fallen as much as 7 percent - after it forecasts a slow first quarter.
"We remain negative on the shares as we believe APR's business profile is less attractive than peer Aggreko (LSE: AGK.L - news) , our preferred play in this sector," Cantor Fitzgerald analyst Caroline de La Soujeole writes in a research note.
ServicePower rises 6.7 percent after stating it has made a positive start to 2013, despite posting a pre-tax loss of 1.8 million pounds ($2.7 million) for 2012.
"During the past 12 months, the group has significantly expanded its operational platform, product offering and contract base," Finncap analyst Mark Paddon writes in a research note.
Reuters messaging rm://sudip.kargupta.thomsonreuters.com@reuters.net
($1 = 0.6608 British pounds)
