FTSE 100 futures slipped as two forces collided: oil prices fell while the pound strengthened. Investors watching the UK benchmark watched the index lose ground, with energy-heavy components dragging on sentiment amid lower crude values. The stronger sterling added another layer of pressure on the index.

A rising pound hurts the FTSE 100 because many constituent companies earn revenue overseas. When sterling gains, those earnings translate into fewer pounds back home. Combined with falling oil, which directly hits energy firms, the index faced a tough session. The dual pressure reflects broader currency and commodity swings that define UK market performance.

For traders, the move signals caution heading into the session. Oil weakness and currency strength rarely help a benchmark where energy stocks carry significant weight. The FTSE 100's reaction to this combination keeps the index under pressure near term.