Is Richmond Park a strong Lib Dem area?
Could be. Definitely a seat where they have a good shot, anyway.
It was a solid LD seat until 2010, when the Tories ran Zac Goldsmith, then most known for his environmental activism, who unseated the LD incumbent. Goldsmith got a huge majority in 2015 as the LD vote collapsed without an incumbent (and generally across the country). But Goldsmith was also very pro-Brexit in a seat that is one of strongest Remain constituencies in all of Britain. In 2016, he stood down and ran for re-election in a by-election for stupid reasons (to protest the government's support for a new runway at Heathrow), and the LDs were able to make the by-election about Brexit instead, and they humiliated Goldsmith and won the seat back on an enormous swing. The new LD incumbent, Sarah Olney, has proven quite popular and effective, but Goldsmith is running again, and it's less than clear that the circumstances that carried Olney to victory in the by-election (such as tactical squeezing of Labour) will hold again.
Should have results soon.