UK shares climbed on Monday after President Trump exempted smartphones and computers from Chinese tariffs, providing some relief to investors. The FTSE 100 index was up 1.8% and the midcap index gained 1.7%. The energy sector led gains as oil prices increased, with Energean and BP seeing significant rises. Electronics and technology stocks also surged, and bank stocks performed strongly. Wood Group, an oilfield services and engineering firm, jumped 11.5% after receiving a conditional offer from Sidara. However, fund manager Ashmore dropped 7% after reporting a decline in managed assets.