(For a Reuters live blog on U.S., UK and European stock markets, click LIVE/ or type LIVE/ in a news window)

* Reckitt Benckiser gains on sales beat

* Travel stocks hit by rising Ukraine tensions

* FTSE 100 down 0.9%, FTSE 250 off 1.2%

Feb 17 (Reuters) - UK shares fell on Thursday following reports of Ukrainian forces and pro-Moscow rebels trading fire, while weakness in financials and energy stocks further dented sentiment.

The blue-chip FTSE 100 declined 0.9%, extending losses from Wednesday, after data showed consumer prices rose at the fastest annual pace in nearly 30 years last month.

Russia-backed rebels and Ukrainian forces traded accusations on Thursday that each had fired across the ceasefire line in eastern Ukraine.

Oil majors BP and Shell fell 1.4% and 2.7%, respectively, tracking crude prices as talks to resurrect a nuclear deal with Iran entered their final stages, but losses were limited by the Ukraine crisis.

Stronger energy prices have helped the commodity-heavy FTSE 100 weather geopolitical tensions better than its pan-European counterparts, with BP and Shell gaining more than 20% so far since the start of 2022.

Banking stocks slipped 1.3%, tracking weakness in British two-year government bond yields which fell sharply for a second straight day.

The domestically focussed mid-cap index fell 1.2%, with travel stocks dropping 1.8%.

"Travel and leisure is always going to get hit when you have geopolitical concerns in Eastern Europe," Michael Hewson, chief markets analyst at CMC Markets, said.

Wizz Air and Air France KLM-SA, both down 7.4% each, were airlines that do a lot of business in that region, Hewson added.

Standard Chartered reversed early losses to end 1.7% higher after the lender raised its core profitability goals and promised shareholders extra payouts, despite full year profit undershooting expectations, as it banks on inflation-battling rate hikes worldwide to boost lending.

Reckitt Benckiser Group jumped 5.9% and was the biggest gainer on the blue-chip index after beating estimates for fourth-quarter sales, as heightened fears about COVID-19 led to increased demand for its cleaning products. (Reporting by Bansari Mayur Kamdar and Amal S in Bengaluru; Editing by Subhranshu Sahu, Rashmi Aich and Shounak Dasgupta)