Oil prices remained weak followed a dialling down of tensions over the geopolitical situation in Syria. This kept pressure on oil majors such as BP (BP.), down 1.6% at 496.3p.
Miners were also down with Evraz (EVR), which is also affected by the tensions between Russia and the US, shedding 7% to 365.2p. It was followed lower by Randgold Resources (RRS) and Fresnillo (FRES).
The FTSE 100 closed down 0.9% at 7,198.
Brent crude oil retreated 1.3% to $71.65 per barrel. Copper climbed 1.2% to $3.10 per pound and gold glittered at $1,348 per ounce.
Wall Street opened higher on Monday as investor sentiment remained steady following missile attacks in Syria over the weekend.
The Dow Jones led the way, up 0.8% at 24,553 around 5pm UK time.
MID AND LARGE CAP RISERS AND FALLERS
Shares in Costa Coffee and Premier Inn owner Whitbread (WTB) frothed 7.2% higher to £42.18 after activist investor Elliott Advisors became the largest investor in the company. According to reports, Elliott is seeking a spin-off of Costa.
Advertising colossus WPP (WPP) fell 6.5% to £11.11 as investors reacted to the resignation of chief executive Martin Sorrell, who had been subject to a misconduct probe.
Rare diseases specialist Shire (SHP) was down 1.1% at £35.66 after agreeing to sell its oncology business to French rival Servier for $2.4bn amid a potential takeover approach from Takeda.
Polymetal (POLY) announced it will receive 85% of copper-gold East Tarutin deposit licence holder Tarutinskoye in return for 100% of Polymetal's licence holder Vostochny Basis of the copper-gold Tarutin deposit. Its shares dropped 9.5% to 611.2p.
SMALL CAP RISERS AND FALLERS
Investors were pleased with Carr's (CARR) latest half year results following a recovery in its engineering division and a strong performance in its agriculture business. Its shares grew 4.2% to 143p.
Orosur Mining (OMI) revealed lower production in its third quarter following a change in approach to its Uruguay gold project, dragging the shares 19.6% lower to 5.1p.