(Sharecast News) - London's FTSE 100 was down 1.1% at 8,039.06 in afternoon trade on Tuesday.

Fresnillo slid after saying that Industrias Peñoles, its partner in a long-standing silver production agreement, was having operational issues affecting the Sabinas mine, which is fully owned by Peñoles.

Vodafone slumped even as it reiterated full-year guidance after saying first-half results were in line with expectations.

Russ Mould, investment director at AJ Bell, said the quarterly performance "was marred by a weak showing for its German business, its biggest market, where a previously flagged issue around the government barring housing associations from bundling TV with rent is impacting performance".

Convatec surged to the top of the index as the wound care specialist raised its guidance for 2024 following robust sales growth across its divisions.

DCC shot higher as it announced plans to simplify its operations and focus on the energy sector. The sales, marketing and support services group also reported a rise in interim profit and lifted its dividend.

Melrose Industries gained on the back of an upbeat note from Citi, which said a recent site visit at Western Approach highlighted "a number of industry-leading technologies".

FTSE 100 - Risers

Convatec Group (CTEC) 261.80p 20.87%

DCC (CDI) (DCC) 5,730.00p 15.38%

Rightmove (RMV) 607.00p 2.53%

Smith & Nephew (SN.) 959.40p 2.30%

Centrica (CNA) 118.20p 1.29%

Melrose Industries (MRO) 517.20p 0.78%

Diploma (DPLM) 4,518.00p 0.53%

Auto Trader Group (AUTO) 793.00p 0.46%

British American Tobacco (BATS) 2,751.00p 0.40%

F&C Investment Trust (FCIT) 1,112.00p 0.36%

FTSE 100 - Fallers

Fresnillo (FRES) 635.50p -5.99%

Vodafone Group (VOD) 68.64p -5.97%

Vistry Group (VTY) 714.00p -5.49%

Anglo American (AAL) 2,231.00p -4.10%

Prudential (PRU) 619.00p -3.49%

Croda International (CRDA) 3,663.00p -3.43%

Airtel Africa (AAF) 95.65p -2.65%

Glencore (GLEN) 378.45p -2.59%

Antofagasta (ANTO) 1,617.00p -2.38%

Frasers Group (FRAS) 732.50p -2.33%