Rihanna & Drake seen dirty dancing and kissing to their own song

Rihanna and Drake were spotted kissing at a London nightclub.RiRi,  arrived at the venue at midnight on Monday, securing the VIP area and was joined by Drake an hour later.
After being served bottles of vodka and tequila they started grinding with each other, surrounded by pals, and requested dancehall music from the DJ who played ''Work'' five times...An onlooker tells 3am:

 “They seemed really into each other and didn’t care who saw. Rihanna was grinding and twerking into him, and they kissed in full view of the floor. They were having such a good time, they didn’t even notice it was 5:30am.”

They jetted into the UK and are to hit the stage at the Brit Awards..