Oh!
That is a bummer...
the incoming GBP will be 1,100 monthly
Do you have a recommendation then?
Apart from the UK banks charging an incoming remittance fees, any other downsides i need to be aware of?
If you can open a Citibank account both in SG and UK, you would be able to move funds freely between them instantly via
CGT. Also, for Citi SG, incoming telegraphic transfers are free.
The downside of this is the minimum TRB (total relationship balance) that you will need to maintain.
For regular Citibanking, it would be ~SGD15k in each country separately (SG, and UK). If you can qualify for Citigold ~SGD250k, you only need to maintain that in any one country, and the status will be accorded to your overseas accounts too.
Not much else you can do - I would advise you to request for physical GBP (*) before departure, or SGD so you can change it and carry it with you instead; and to have your company TT you the GBP1,100 to your UK account each month, after you have set it up. Generally, it costs around SGD20-50 to send a TT (taking both sender and receiver costs into consideration), it would be quite silly to pay that fee twice by setting up to receive it in an account in SG, then to try to forward it to yourself in the UK.
On top of that, you may lose access to the funds - not many banks in SG will allow you to make all possible transactions via the internet. The only bank I can do so is Citibank. The close second is CIMB, but it requires signing forms in advance *and* some transactions must still be confirmed by telephone confirmation before they are executed.
One other thing you had not mentioned, is how long will you be there for. I would think most of these 'cost saving measures' aren't worth the effort, if you'll not be there for a significant period of time (more than a year?)
(*) Considering brexit, and how the GBP has been constantly falling - it may be advantages to request for your allowance in SGD, and have that rate fixed before departure. If things keep up, you'd have more GBP each month. Of course, this does also carry the risk that you may end up with less GBP each month should the currency strengthen over time instead.
The other downside of receiving and holding your entire allowance in GBP is, if it's constantly falling is, by the time you return to SG, it may be worth significantly less. By getting your allowance in SGD, you can decide how much, and when to convert funds to GBP as required; that is assuming your total expenses is less than your allowance each month.