Passage migrant and winter visitor that has bred.

Foster (1914) recorded Grey Wagtails in the Stevenage district in winter.

They are regularly seen at Fairlands Valley Lakes, from where they were first recorded on 21 September 1974, with, records from every month of the year. The most seen together there are 20+ on 17 April 1981. Evidence of breeding has also recorded from there; juvenile birds seen on, 13 June 2003, and 22 June 2004, an adult and young seen on 16 June 2015, breeding confirmed in 2016, 2017 and 2019, a juvenile bird seen on 29 June 2020 and two adults, and a juvenile bird seen on 16 June 2023.

Other records for Stevenage:

Prior to 1990: Bragbury End 1973; Whomerly Wood, Industrial Area and Town Centre Gardens 1975; one at Town Centre Gardens on 12 January 1976; two at Watery Grove on 10 July 1977; Town Centre Gardens 1977; Astonbury 3 September 1978; a ringed bird caught in Box Wood 23 September 1978; male at Astonbury 26 November 1978; one at Astonbury 2 January 1979; Stevenage Golf Course 1 November 1979; Watery Grove during the 1979 breeding season; Watery Grove April and 18 and 26 June 1980; one at Glebe Shops 15 October 1980.

The 1990s: one at Edmonds Drive on 2 October 1993; Aston Brook 15 October 1995; Ditchmore Lane 29 November 1996; Stevenage Brook, Monks Wood Way 23 December 1996.

Between 2000 and 2009: Town Centre Gardens 11 March 2003 and 27 April 2005; Bessemer Drive 23 January 2006; Brickdale House 9 February 2006; Gunnels Wood Road 16 September 2006; two Bedwell Crecent 7 November 2006; Asda Car Park 19 May 2007; Ridlins Mire 25 November 2007; Ridlins End 20 July 2008; Stevenage Brook, London Road 20 and 21 January and 30 July 2009; Towers Pond 7 May 2009; Town Centre Gardens 21 May 2009; Aston Brook, Gresley Way 20 December 2009.

With an increase in records between 2010 and 2019 they were recorded from: Aston Brook, Goddard End and Gresley Way; The Coach House, Bragbury End; Broadwater Crescent; Jackdaw Close; Leisure Park; Old Town; Norton Green Pond and the Pond behind Norton Green Cottage; Norton Green Tip; Ridlins Mire; St George’s Church; Six Hills Way; Southgate; Tatlers Lane, Aston End; Town Centre and Town Centre Gardens; Watery Grove.

Since 2020 they have been recorded from: Astonbury; Astonbury Wood; Aston End Road; roof of the former BHS Store, Town Centre; Broadwater; Chells Manor and Pond; Edmonds Drive; Pin Green; Potters Spring; Sandown Road; Six Hills Way; Stevenage Brook; Town Centre Gardens; Watery Grove.          

They were not recorded as breeding in the 1973 Breeding Atlas at Stevenage, the 1992 Breeding Atlas considered possible breeding from the tetrads covering Pin Green (which includes Fairlands Valley Lakes), Broadwater and Norton Green, the 2012 Atlas confirmed breeding from the tetrad covering Knebworth and, considered possible breeding from the tetrads covering Pin Gren and Norton Green and possible breeding from the Old Town, Broadwater, and Aston.

In 2014 birds were seen carrying food at Watery Grove on 10 May and, at Southgate Car Park on 22 June. In 2016 a pair were seen carrying food at the Town Centre Gardens on 5 May. In 2019 Breeding was suspected at Watery Grove.

The 2012 Winter Atlas confirmed their presence from eight of the tetrads covering Stevenage.