(Sharecast News) - London's FTSE 100 was down 0.5% at 10,631.16 in quiet afternoon trade on Monday.

There wasn't much going on, but software-related stocks were on the rise, with Relx, Experian and LSEG all higher.

BA, Iberia and Vueling owner IAG flew higher as easyJet surged after saying it was ready to accept a sweetened £5.5bn takeover offer from Castlelake after the private equity group tabled a fifth offer at 690p a share.

This followed four prior rejected approaches at 560p, 600p, 625p and 650p.

FTSE 100 - Risers

Relx plc (REL) 2,391.00p 2.23%

Experian (EXPN) 2,704.00p 1.74%

International Consolidated Airlines Group SA (CDI) (IAG) 485.30p 1.72%

London Stock Exchange Group (LSEG) 8,834.00p 1.61%

BAE Systems (BA.) 2,008.00p 1.52%

St James's Place (STJ) 1,320.00p 1.46%

IG Group Holdings (IGG) 1,884.00p 1.34%

Burberry Group (BRBY) 1,099.50p 1.34%

JD Sports Fashion (JD.) 83.84p 1.26%

Barratt Redrow (BTRW) 284.20p 1.21%

FTSE 100 - Fallers

Halma (HLMA) 3,894.00p -2.84%

Games Workshop Group (GAW) 20,680.00p -2.27%

Diploma (DPLM) 7,050.00p -2.22%

Spirax Group (SPX) 6,640.00p -1.99%

IMI (IMI) 2,886.00p -1.90%

Associated British Foods (ABF) 1,920.00p -1.89%

Airtel Africa (AAF) 338.00p -1.81%

Smiths Group (SMIN) 2,586.00p -1.78%

Fresnillo (FRES) 2,865.00p -1.75%

AstraZeneca (AZN) 14,168.00p -1.73%