Following an excellent debut at Haydock only a fortnight back, Lightning Polka will aim to carry the royal colours to Group Three success in the Ladbrokes-sponsored Firth Of Clyde at Ayr on Saturday.

The daughter of Night Of Thunder is one of the very first horses sent to trainer Ed Walker by the King and Queen and made a best start to her profession on Merseyside.

Her handler is aware she has far more on her plate in Scotland this weekend, however is hoping she can show up to the task.

Speaking at Newbury on Friday, Walker said: "It's a special day and she was really impressive at Haydock on her debut.

"I think she'll be OK on the ground, despite the fact that Tom (Marquand) stated it was a bit dead and ugly when he rode there on Thursday.

"I think she'll enhance again from this run and we have actually not done a lot since Haydock as this comes quick enough. I would have liked it to have actually been three weeks because her launching instead of 2, but she's a nice filly and she was actually uncomplicated and professional very first time.

Trainer Ed Walker is ready for a huge afternoon at Ayr (John Walton/PA)

"It's a dream to train for the King and Queen and she was actually our very first two-year-old to have a problem, which I could not believe.

"I was so fired up to train 2 horses for the King and Queen and I have a very great filly who is a bit backwards and after that Lightning Polka, who is more of a two-year-old type. She went and got a niggle early, but thankfully she overcame that rapidly and she's interesting."

One of the most significant hazards to Lightning Polka seems dual winner Coming Attraction, who won a hot conditions race at Chester last time and represents the growing Roger Varian string.

Also in the mix is Richard Fahey's Catching The Moon, who needed to choose 2nd behind Albany Stakes runner-up Awaken on her Leicester debut before easily dispatching a subsequent winner at Beverley at the 2nd time of asking.

Fahey believes the No Nay Never filly might not realise her complete capacity up until next season, but is keen to test the waters at a higher level before the end of her juvenile project.

"We do like her however I'm uncertain how she will cope with the ground if it's on the sluggish side," he said.

"We're pleased to run her and see what happens. I believe her very first run was rather excellent and we feel we would probably beat the winner if we met again and after that the race at Beverley which she won will have done her the world of excellent, so we've been pleased with her.

"She's a filly for next year really and I didn't desire to run her a lot of times, however I required to run her again so I believed I may too run her in a good race and see how she gets on."

A total of 15 two-year-old fillies go to post on the west coast of Scotland, with other significant names consisting of Simon and Ed Crisford's Lowther fourth Dandana, Ed Bethell's simple Catterick winner Rogue Attraction and George Boughey's unbeaten three-time winner India Love.

There is likewise competitive action, albeit with less runners, in the Listed Ladbrokes "Big Football Bet Builder Boosts" Doonside Cup, where Andrew Balding's Feilden Stakes winner Almeric makes his very first appearance since impressing at Newmarket in April.

He is the likely favourite in a field of 6 for a 10-furlong contest in which William Haggas is represented by Caviar Heights, with the Somerville Lodge handler hoping conditions stay ideal for a four-year-old who has suffered successive narrow defeats at Listed level in the Gala Stakes and August Stakes.

"He's been a bit regrettable but he desires soft ground and ideally it will still have some cut in it on Saturday as the softer it is, the better he will be," stated Haggas.

"He's a very great horse and when he gets soft ground you'll see an even much better horse."