Skip to content
Horse profile

Allegra Byron (GB)

3yo filly (at last run, Aug 2012) · Last trainer Jonathan Portman · Last owner L Raissi
by Byron (GB) out of Colourflash (IRE) (College Chapel)
5 runs · 4 courses · from Sep 2011
As at 4 Nov 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
No run recorded since 11 Aug 2012 — 5,197 days ago. Our archive can't say whether the horse is still in training.
Last run Aug 2012 · 14th of 14 First-time headgear LTO Last raced off OR 54
KTB Profile

Allegra Byron (GB) is yet to win from 5 starts. Best effort: 4th of 6 at Bath (Apr 2012).

Based on 5 archived runs · updated 4 Nov 2026

KTB Speed and Rating

KTB Speed

No KTB Speed figures for this horse. The engine scores GB and Irish racing from Oct 2016; runs elsewhere, or earlier, have no figure.

KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 0 figures from 0 runs · a record, not a forecast

KTB Rating

Best recent KTB Rating 56A the best of the last 3 rated runs · Kempton (AW), 30 Apr 2012 Official rating 54 at the last run, 11 Aug 2012

What the horse achieved in each race, in pounds on the official-rating scale, from the weight carried, the lengths beaten and the race's own level solved across the archive — never the market, never the official rating as a starting point. The headline is the best of the horse's last three rated runs on that code — its best recent day. The KTB Rating on a racecard is a different reading of the same figures: the level the horse has been running to, an average of up to its last six runs with the latest counting most, so the two can differ. A, B or C on a run is how much known form was in that race. What this means →

Flat 5 figures · best 56A · median 48
GoingRunsBestMedianSince 4 Nov 2025
Good to Firm248C43.5—
Standard (AW)1———
Good to Soft1———
Good1———
DistanceRunsBestMedianSince 4 Nov 2025
6f – 7f356A48—
Under 6f252B42.5—

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 5 figures from 5 runs · as at 4 Oct 2026 · a record, not a forecast

Both figures are KTB's own, computed from the archive; no vendor rating enters either. Every run's figure is on its form line below with its grade. Grades measure how much the archive could see, never the merit of the run.

Run style is derived from in-running commentary, which our data provider does not supply for this horse's races.

Pedigree intelligence

Sire

Progeny in our archive have won 9.4% of 3,248 runs since Mar 2010 (225 horses).

Weakest over 1m5f – 2m (all codes): 4.7% from 172.

GoingRunsWinsSRvs sireThis horse
Firm3412.9%−6.5—
Good to Firm593549.1%−0.30 from 2
Good617538.6%−0.80 from 1
Good to Soft278227.9%−1.50 from 1
Soft300206.7%−2.7—
Heavy69710.1%+0.7—
Standard (AW)1,35714710.8%+1.40 from 1
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f508509.8%+0.40 from 2
6f – 7f1,47815510.5%+1.10 from 3
1m – 1m1f590478%−1.4—
1m2f – 1m4f399328%−1.4—
1m5f – 2m17284.7%−4.7—
2m1f – 2m4f841214.3%+4.9—
2m5f – 3m1600%−9.4—
Over 3m100%−9.4—

Flat and jumps together (all codes) · since Mar 2010 · as at 4 Nov 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast

Dam
Colourflash (IRE) (College Chapel)

5 siblings in the archive, 3 winners — best of them Flashbang (GB) (3 wins).

The wins came over 5f–6f; the highest grade won is Class 5 (Flashbang (GB)).

ProduceRunsWinsWin tripsBest grade
Flashbang (GB)2236fClass 5
Extremely Rare (IRE)2735f–6fClass 5
Wotasparkler (GB)1016fClass 5
It's A Stitch Up (GB)40——
Rio Rouge (IRE)60——

Record by conditions

GoingRunsWinsSR£1
Good to Firm 2 0 0% −2.00
Standard (AW) 1 0 0% −1.00
Good to Soft 1 0 0% −1.00
Good 1 0 0% −1.00

ClassRunsWinsSR£1
Class 6 3 0 0% −3.00
Class 5 2 0 0% −2.00

CourseRunsWinsSR£1
Bath 2 0 0% −2.00
Lingfield 1 0 0% −1.00
Folkestone 1 0 0% −1.00
Kempton (AW) 1 0 0% −1.00

DistanceRunsWinsSR£1
6f – 7f 3 0 0% −3.00
Under 6f 2 0 0% −2.00

JockeyRunsWinsSR£1
Luke Morris 2 0 0% −2.00
Brett Doyle 1 0 0% −1.00
Lee Newman 1 0 0% −1.00
Ross Atkinson 1 0 0% −1.00

HeadgearRunsWinsSR£1
None 4 0 0% −4.00
Cheekpieces 1 0 0% −1.00

SeasonRunsWinsSR£1
2012 4 0 0% −4.00
2011 1 0 0% −1.00

Splits include every sample, however small — muted rows are under 3 runs. A one-from-one record is a fact, not a trend: read the Runs column before the strike rate.

Form

DateCourseRace PosBtn Wgt ORKTB Jockey SP
2012 · 4 runs
11 Aug 12+16d Lingfield Ashurstwood Handicap Class 6 · 7½f · Good To Firm · 14 ran 14/14 2¾ 9-1 5439C Brett Doyle 25/1
26 Jul 12+87d Folkestone KMFM Kent's Biggest Hits Handicap (Str) Class 6 · 7f · Good To Firm · 13 ran 10/13 7 9-6 5948C Lee Newman 50/1
30 Apr 12+10d Kempton (AW) Betfair Supporting Grassroots Racing Maiden Fillies' Stakes Class 5 · 6f · Standard · 12 ran 7/12 nk 9-0 —56A Luke Morris 25/1
20 Apr 12+228d Bath Peri Ltd Median Auction Maiden Stakes Class 5 · 5½f · Good To Soft · 6 ran 4/6 ½ 8-9 —52B Luke Morris 50/1
2011 · 1 run
05 Sep 11 Bath Lindley Group Maiden Auction Stakes Class 6 · 5f · Good · 8 ran 6/8 nk 8-2 —33A Ross Atkinson 16/1

Quick answers

How many races has Allegra Byron won?
Allegra Byron (GB) has yet to win, from 5 archived starts between 2011 and 2012.
Who trained Allegra Byron?
Allegra Byron (GB) was trained by Jonathan Portman on the most recent run on record, at Lingfield on 11 August 2012.
Who is Allegra Byron's sire?
Allegra Byron (GB) is by Byron (GB) out of Colourflash (IRE), whose sire is College Chapel.
What is Allegra Byron's official rating?
The most recent official rating on record is 54, from the run on 11 August 2012. The highest on record is 59.
What is Allegra Byron's sire's record?
Byron (GB)'s progeny in our archive have won 9.4% of 3,248 runs since Mar 2010 (225 horses), Flat and jumps together. Weakest over 1m5f – 2m (all codes): 4.7% from 172.
Who are Allegra Byron's siblings?
Out of Colourflash (IRE), Allegra Byron (GB) has 5 other produce in our archive, 3 of them winners. Most wins: Flashbang (GB) (3). Highest grade won: Class 5 (Flashbang (GB)). The wins came over 5f–6f. As at Nov 2026.

Record shown from September 2011. Our archive holds racing in Great Britain, Ireland and France from January 2005. Any runs before that, or in other countries, are not in it. In-running comments are available from 2024 onward.