The FTSE 250 was up 0.63% at 21,088.16 at 1405 BST.
Shares in Russia-focused gold miner Polymetal topped the index as they continued their roller-coaster ride amid the war in Ukraine.
Oil prices fell over night on fears of a dip in demand from China as Shanghai city authorities ordered a week-long lockdown to combat an outbreak of the Covid Omicron variant. The fall boosted airline stocks easyJet, Wizz Air and travel firm TUI.
On the flip side, oil producers were in the red, with Tullow Oil, Harbour Energy, Energean and Centrica.
FTSE 250 – Risers
Polymetal International (POLY) 245.00p 39.20%
easyJet (EZJ) 541.40p 4.84%
Moonpig Group (MOON) 221.40p 4.24%
TUI AG Reg Shs (DI) (TUI) 232.60p 3.70%
Wizz Air Holdings (WIZZ) 2,644.00p 3.61%
Ferrexpo (FXPO) 171.50p 3.38%
Diploma (DPLM) 2,560.00p 2.98%
Sequoia Economic Infrastructure Income Fund Limited (SEQI) 98.70p 2.81%
Games Workshop Group (GAW) 7,290.00p 2.53%
FirstGroup (FGP) 109.90p 2.42%
FTSE 250 – Fallers
Lancashire Holdings Limited (LRE) 390.80p -3.51%
Tullow Oil (TLW) 51.66p -3.33%
Wood Group (John) (WG.) 166.25p -3.06%
Harbour Energy (HBR) 483.20p -3.01%
Centrica (CNA) 82.48p -2.39%
Energean (ENOG) 1,173.00p -2.25%
Oxford Instruments (OXIG) 2,080.00p -2.12%
Hill & Smith Holdings (HILS) 1,500.00p -2.09%
QinetiQ Group (QQ.) 309.60p -2.03%
Rank Group (RNK) 139.40p -1.69%
