The following is a round-up of updates by London-listed companies, issued on Tuesday and not separately reported by Alliance News:

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Rosslyn Data Technologies PLC - cloud-based...

Serica Energy PLC - North Sea-focused oil and gas produce - Says production at the Triton floating production storage & offloading unit resumed in line...

InterContinental Hotels Group PLC - Windsor, England-based hotel company - Chair Deanna Oppenheimer takes short-term leave of absence for medical reasons. Non-Executive Director Graham Allan...

Gulf Marine Services PLC - London and Abu Dhabi-based operator of self-propelled self-elevating support vessels for offshore energy industry - Reports revenue of $138.3 million...

Syncona Ltd - London-based investor in life science companies - Sets out results of its strategy review, proposing focus on realisations of mature private companies...

DCC PLC on Tuesday said it has agreed to buy Austrian liquid gas distributor FLAGA GmbH from UGI International LLC.

Dublin-based DCC provides sales, marketing and...

XP Power Ltd on Tuesday said it has ‘increasing confidence’ heading into next year, as it reported an increase in third-quarter order intake.

The Singapore-based maker...

BP Marsh & Partners PLC - London-based investor in early-stage financial services businesses - Records 9.5% total return in the first half of its financial...

Personal Assets Trust PLC - investment trust focused on long-term growth - Chair Iain Ferguson buys 12,995 shares at £5.39, worth £69,996, on Monday this...